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Music

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We need you!

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Something just touched me!

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Everybody out of the water! Get out!

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Get out of the water!

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Get out!

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Everybody out of the water!

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Stop! Stop! Stop!

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What's everybody freaking out about?

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That is some bad hat, Jamie.

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So, Jamie, 2015 marks the 40th anniversary of one of the all-time great horror movies, and it is, of course,

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...

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... Jaws.

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And we are going to celebrate by jumping back into the water with an entire episode devoted to sharks.

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Cool. What's on the docket?

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Well, later we're going to be testing not one, but two shark repellent missiles.

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One involves the sound of orcas repelling sharks.

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The sharks' behavior have seemed really incredible.

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And the other involves the essence of, uh, well, dead shark.

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Weird.

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But first, we are going to be retesting a myth that fans say we got wrong 10 years ago.

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That would be scuba tank explosion?

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Yes. Okay, so to recap, it's the end of the movie and for Chief Brody, it is kill or be killed.

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The sharks is racing towards him to eat him.

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He's got a scuba tank sticking out of the corner of his mouth.

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Brody lifts his thirst.

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Brody lifts his 30-odd sex, takes his shot, and kills the shark.

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But for us, it didn't work.

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No, it didn't, but fans say our methodology was flawed and I think we should retest it.

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So what? Are we going to need a bigger boat?

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I think that's accurate.

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When the mythbusters first took aim at the Jaws finale...

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Three, two, one!

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... their conclusion was controversial.

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The final sequence of Jaws, I'm sorry to say, is totally busted.

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So now, 10 years down the line, it's time for a do-over.

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So fans had three specific questions the first time we tackled this myth.

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Number one, what if Brody didn't shoot the tank directly but grazed it with this bullet,

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causing a weakness that ruptured, making the tank explode?

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Smile, you son of a...

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Two, what if Brody had a different gun?

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Is there a caliber of bullet that could cause a scuba tank to explode?

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And three, and this is where we're actually starting this story,

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what happened to the tank when we shot it?

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The tank did not actually split all the way open. It didn't explode.

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Oh!

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It rocketed away.

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Yes, fans wanted to know if a rocketing tank could actually harm a shark.

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And to find out if a rocketing tank could kill,

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the guys must build a life-size, super realistic shark stand-in.

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And Adam's starting that by getting anatomical.

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John, can you give me a little bit of shark anatomy 101 here?

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Sure, this is a salmon shark. It's very similar to a white shark.

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In fact, it's an insane family, only they don't get us large.

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But the inside is fine.

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Adam needs hands-on experience for two reasons.

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What is that? What is this giant thing?

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That's the liver.

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First, he must figure out the journey that a rocketing tank would take.

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Food will enter the esophagus. He moved into the stomach.

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That's the stomach right here that I'm touching.

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Which turns out to be simple.

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The tank would first shoot through a muscular sphincter

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before entering the esophagus, which goes into the stomach.

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Reason two, which requires a bigger shark, is about material research.

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The skin is so rough.

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Adam must feel the insides to work out what to build his realistic replica from.

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Wow, there's nothing soft about this thing at all. It is like shoe leather.

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John McOsker's lesson for me in shark anatomy is that

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he's not only a shark, but he's also a shark.

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He's also a shark.

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He's a shark.

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John McOsker's lesson for me in shark anatomy

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provided me the opportunity to stick my entire arm down the gullet

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of a seven-foot lemon shark.

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Textureally, it's an amazing experience, because what's surrounding it

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is so meaty and tough, and if we're going to anatomically match that,

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we're going to need to add something that really comes akin to

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a significant musculature that surrounds that in a shark.

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With the research phase now complete,

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my pleasure to wash your hands.

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The build can begin, where Jamie's starting with a skeleton.

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This stuff right here, which is expanded polypropylene,

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and it's basically the same plastic that's in a portable gas can,

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is what we're going to be making our framework and our jaws out of,

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because it's flexible, kind of like stiff cartilage.

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It's perfect, and we can screw right through it.

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It's easily cut through grill.

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Having similar specs to a shark's cartilaginous skeleton

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is crucial for realistic structural integrity.

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That actually doesn't look half bad.

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But for the rocketing tank test, it's the gullet that's key.

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And to replicate that, we've decided to use cowhide,

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this leather here, because it's tough, like the inside of a shark,

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based on what Adam saw with Dr. McOsker.

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Stitch together, it should be just what the doctor ordered.

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The leather's tough texture is perfect.

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But finding the right tool to tailor it,

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is a much tougher task.

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Maybe not.

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But once Jamie goes old school,

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sometimes simpler is better.

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He's able to go hell for leather on both the esophagus.

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There's my gullet.

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And the stomach, both of which are not only to scale

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for a jaw-sized, great white...

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Well, there we go.

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Gullet, stomach.

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...but also have just the right feel.

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This feels very similar to what it felt like

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sticking my hand in that shark's mouth at the academy.

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Whoo-hoo-hoo-hoo-hoo.

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It's coming together.

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That is awesome.

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Next, Jamie moves on to muscle mass.

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Is that how to do it?

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Jamie and Jamie are going to give the shark

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that authentic anatomy.

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These bits right here are going to be my shark muscle.

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So I'm going to saturate them

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with a urethane rubber.

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So the thing here is to get this carpet

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to soak up this resin.

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We'll kind of apply them like bandages

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and create bands of muscles

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that'll be nice and meaty-looking

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and also provide

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the kind of fibrous, tensile support

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that holds everything together.

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That was the last screw. It's all yours.

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With the internal structure now locked and loaded,

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it's time to slip the shark some skin.

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A layer of 2-inch thick upholstery foam.

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Ah-ha-ha-ha-ha!

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He looks right and proper.

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Which, once treated with a neoprene primer and paint,

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will have a somewhat similar strength

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to real shark skin.

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Like black eyes, like a doll's eyes.

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And the other thing is the shark's eyes.

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Like black eyes, like a doll's eyes.

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I kind of want to name him right now.

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There's Bruce, and then there's Buster.

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I dub him...

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Brewster!

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Time to smile for the camera, Brewster.

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Yeah!

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Da-da-da!

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Suddenly, I don't want to go swimming.

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In terms of anatomical accuracy,

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their shark is second to none.

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Let's get shooting.

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Pop quiz, what is the name of Quince Boat in Jaws?

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No idea.

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Okay, and he's what was called the Orca,

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which is good because our next myth involves Orcas or killer whales.

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Go on.

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Well, as you know, Orcas are natural predators of sharks.

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They're big ones like great whites or tiger sharks.

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So it stands to reason that sharks might be afraid of Orcas, right?

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Right.

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So it also stands to reason that some people say

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you can effectively get sharks to leave an area

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by playing the sounds of Orcas underwater.

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And the sharks will head for the hills.

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Apparently.

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To find out, Adam and Jamie have hit the deep blue sea.

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They're coming up on the boat.

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Maybe stating the obvious, but I think we've come to the right place.

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They've come to the right place in more ways than one.

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There's another reason this location is perfect for our test today.

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And that is because Orcas are not unknown to these waters.

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It's not incredibly frequent, but it's not infrequent either.

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So it's pretty likely that the sharks we're dealing with

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would have heard at some point the sound of Orcas swimming,

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Orcas on the hunt, all the sounds we're going to be playing for them.

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Having experience with killer whales is not essential

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because the myth is supposedly an instinctive behavior

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shown by all sharks.

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So what's the plan?

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So down below, there's an old shipwreck.

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Pretty soon there's going to be this bait box full of fish bits,

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this omnidirectional speaker, and by the way, lots of sharks.

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Up here, I'll be meaning a comm system that I can use to both talk to Jamie

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and play sounds through that omnidirectional speaker.

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Sounds of our control and sounds of killer whales.

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Oh, by the way, monitoring all this from underwater?

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None other than James Franklin D. Heinemann.

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The D stands for danger.

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He's right. The D does stand for danger.

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Once the danger man is suited and looted, it's go time.

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Okay, well, I see a lot of my old friends down here.

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From the moment he hits the water, Jamie's surrounded by sharks.

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You know what they say? If you're going to swim as sharks,

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you're going to get bit, hopefully not today.

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And by the time he reaches the wreck, where visibility is eerily limited,

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It's kind of murky down here, Adam.

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the shark's aggression appears to increase.

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They're coming in fairly close.

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So much so that even the danger man is beginning to freak out.

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Okay, Adam, we're seeing a lot of activity in Titan close right now.

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I must say the sharks' behavior seems really aggressive.

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Woo!

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It's shark week. I love saying that.

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We are in the Bahamas, the waters full of sharks and Heinemann.

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And we're trying to determine if the sound an orca makes underwater

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is a reasonable shark repellent.

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As this incredible footage shows, even large tiger sharks are no match for killer whales.

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But does that mean that on hearing their calls, sharks will instinctively

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high-tail it out of there, terrified?

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Well, having realized that the sharks aren't hungering for a Heinemann,

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Hi, how are you doing?

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a more relaxed Jamie positions the underwater speaker.

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Hello, guy.

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which will first play not orca sounds, but a control.

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What is our control noise?

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It is specifically recordings of the sounds that humpback whales make underwater.

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This is an ideal control.

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Number one, they make very loud sounds that can be heard for many miles underwater.

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Two, they are ubiquitous to all the oceans of the world.

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Three, they are not predators of sharks, so there's no reason a shark would look

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for any danger from the whale's sound.

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It makes an ideal control to the orca sound.

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It looks like we've got around 16 sharks.

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Very interested in what we're doing here on this wreck.

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I think we're good to go.

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Copy that, sir.

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I am about to press play on our control sound, the humpback whale.

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In three, two...

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That's definitely calling the home planet.

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And again, just for clarity.

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At this point, you might be wondering to yourself,

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self, how do sharks actually hear?

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It's a good question, and the answer is cool because they have two distinct organs

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for detecting sound.

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First is their ears.

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On each side of their head, they have a hole that leads to an ear canal,

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and inside of that are sensory macula, which detect sound.

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But in addition, running down the length of their entire bodies

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is an organ called the lateral line, which can detect vibration.

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And what can cause vibration underwater?

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Yes, sound waves.

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What that means is that the sharks are definitely hearing the whale song.

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But reacting to it, they ain't.

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Sharks are kind of cruising right by the speaker,

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and they're not interested in it or afraid of it. Over.

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So will the sharks' behavior change when they're hearing not whales,

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but their killer cousins?

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Jamie, we are commencing to play the orcasounds in three, two, one, and go.

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You can run, but you cannot hide. That's what they're saying.

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First impressions are not good as the sharks neither run nor hide.

252
00:15:27,320 --> 00:15:30,320
They're just hanging out, looking for action.

253
00:15:30,320 --> 00:15:33,320
Just like this guy right here.

254
00:15:33,320 --> 00:15:35,320
But all is not lost.

255
00:15:35,320 --> 00:15:39,320
Just to be clear, orcas apparently have a very sophisticated language.

256
00:15:39,320 --> 00:15:41,320
Lots of different sounds that they make.

257
00:15:41,320 --> 00:15:43,320
Some are communicating with each other, others are hunting.

258
00:15:43,320 --> 00:15:47,320
We are playing a greatest hit medley of orcasounds.

259
00:15:47,320 --> 00:15:51,320
In case one of them trips up or triggers the sharks, that's what we're looking for.

260
00:15:51,320 --> 00:15:57,320
By playing a mix of sounds, including what scientists think are hunting noises,

261
00:15:57,320 --> 00:16:01,320
the guys are increasing the chances of the sharks getting spooked.

262
00:16:05,320 --> 00:16:08,320
But after ten minutes of manic medley,

263
00:16:08,320 --> 00:16:13,320
this so sounds like a later Miles Davis album I'm not even kidding.

264
00:16:13,320 --> 00:16:15,320
There's no change at all.

265
00:16:15,320 --> 00:16:19,320
I can tell you that we've actually tried quite a few shark repellents over the years,

266
00:16:19,320 --> 00:16:22,320
and I have to say that this doesn't have to be the worst.

267
00:16:22,320 --> 00:16:26,320
There's absolutely no reaction to those sounds at all.

268
00:16:26,320 --> 00:16:28,320
Copy that, that's pretty definitive.

269
00:16:28,320 --> 00:16:30,320
You want to come to the surface?

270
00:16:30,320 --> 00:16:32,320
Okay, I'm coming up.

271
00:16:34,320 --> 00:16:35,320
Nice quick change.

272
00:16:35,320 --> 00:16:36,320
I was chilly.

273
00:16:36,320 --> 00:16:43,320
Okay, look, I like the theory that this story proposes that killer whales are a natural predator for sharks.

274
00:16:43,320 --> 00:16:48,320
Air go, the sounds that killer whales make might make sharks high-tailed out of the area.

275
00:16:48,320 --> 00:16:50,320
That makes sense to me.

276
00:16:50,320 --> 00:16:54,320
Well, it may make sense, but I didn't see any evidence of that at all.

277
00:16:54,320 --> 00:16:56,320
Those sharks didn't care what sounds we were playing.

278
00:16:56,320 --> 00:16:57,320
So this one's busted?

279
00:16:57,320 --> 00:16:58,320
It's gotta be.

280
00:16:58,320 --> 00:17:00,320
Alright, let's go get some fish and chips.

281
00:17:00,320 --> 00:17:01,320
Sounds good.

282
00:17:08,320 --> 00:17:15,320
The climax of Jaws is one of the most famous finales in film history.

283
00:17:15,320 --> 00:17:17,320
Smile, you son of a...

284
00:17:21,320 --> 00:17:24,320
But when the Mythbusters put it to the test...

285
00:17:24,320 --> 00:17:27,320
Three, two, one!

286
00:17:29,320 --> 00:17:32,320
They got not a bomb, but a rocket.

287
00:17:32,320 --> 00:17:34,320
Hey, shark is still alive.

288
00:17:34,320 --> 00:17:35,320
Totally busted.

289
00:17:37,320 --> 00:17:39,320
Now, ten years later,

290
00:17:39,320 --> 00:17:43,320
the Mythbusters are re-tackling this fan favorite.

291
00:17:43,320 --> 00:17:49,320
To find out once and for all if a rocketing air tank could have killed Jaws.

292
00:17:49,320 --> 00:17:53,320
Our shark is, of course, done, but that is only half of his raison d'etre.

293
00:17:53,320 --> 00:17:56,320
Well, it's time for you to go for a swim, little buddy.

294
00:17:56,320 --> 00:18:01,320
No, in order to fulfill his given purpose, he needs to be shot at.

295
00:18:01,320 --> 00:18:04,320
Nice! He's flying!

296
00:18:04,320 --> 00:18:08,320
Specifically for the right ambience, he needs to be shot at in water.

297
00:18:08,320 --> 00:18:10,320
Oh, he looks so good.

298
00:18:10,320 --> 00:18:12,320
And that is, of course, what's behind me.

299
00:18:12,320 --> 00:18:15,320
Pit 232 in lovely Ion, California.

300
00:18:15,320 --> 00:18:19,320
Soon we will lower our shark into this water, and we're going to be shooting at him.

301
00:18:19,320 --> 00:18:23,320
Now, in the movie, Jaws has a scoop tank with its end right about here.

302
00:18:23,320 --> 00:18:27,320
In our earlier tests, we found that if we shoot a tank like that,

303
00:18:27,320 --> 00:18:31,320
the air coming out of that makes the tank effectively a rocket.

304
00:18:31,320 --> 00:18:35,320
So, for our first test, we want to find out what happens to that rocket.

305
00:18:35,320 --> 00:18:37,320
Does it go through the esophagus?

306
00:18:37,320 --> 00:18:41,320
Because if it does, and it makes it through the gullet and into the stomach,

307
00:18:41,320 --> 00:18:44,320
our expert at Academy of Science indicates that that's going to mean

308
00:18:44,320 --> 00:18:47,320
that it's ruptured a bunch of sensitive organs along the way.

309
00:18:47,320 --> 00:18:50,320
And that means a dead shark.

310
00:18:50,320 --> 00:18:52,320
That's the theory.

311
00:18:52,320 --> 00:18:57,320
And to put it to the test, Brewster is carefully driven into the drink.

312
00:18:59,320 --> 00:19:01,320
You got me more gentle than that.

313
00:19:01,320 --> 00:19:02,320
Sorry about that.

314
00:19:02,320 --> 00:19:04,320
Okay, out of water.

315
00:19:04,320 --> 00:19:08,320
That right there, my friends, is a perfect frickin' shark.

316
00:19:08,320 --> 00:19:10,320
Adams right.

317
00:19:10,320 --> 00:19:14,320
Brewster is the most anatomically accurate shark analog they've ever built.

318
00:19:14,320 --> 00:19:20,320
But he's only complete with a standard scoop tank that's storing some serious energy.

319
00:19:20,320 --> 00:19:24,320
That looks perfect, Jamie. Excellent.

320
00:19:24,320 --> 00:19:31,320
With nearly everything matching the clip, including the gun, and the distance to the target.

321
00:19:31,320 --> 00:19:32,320
So how are you feeling?

322
00:19:32,320 --> 00:19:34,320
I'm feeling good. We're sighted in and ready to shoot.

323
00:19:34,320 --> 00:19:36,320
All right.

324
00:19:36,320 --> 00:19:41,320
Will they turn the tank into a shark-killing torpedo?

325
00:19:41,320 --> 00:19:43,320
The gun is hot.

326
00:19:52,320 --> 00:19:57,320
I can still see the tank, but it didn't make it past the gullet.

327
00:19:58,320 --> 00:20:00,320
Well, we just put the tank in our shark's mouth.

328
00:20:00,320 --> 00:20:03,320
We fired at its bottom, a perfect hit.

329
00:20:03,320 --> 00:20:06,320
It behaved exactly as we expected.

330
00:20:06,320 --> 00:20:15,320
The tank started releasing its pressure through the bullet hole, which drove the tank into Brewster's gullet, but not past its esophagus.

331
00:20:15,320 --> 00:20:22,320
At this point, it looks like it might be survivable for our shark, that the tank just got wedged in his throat,

332
00:20:22,320 --> 00:20:26,320
and he could potentially, peristaltically cough it back up.

333
00:20:26,320 --> 00:20:30,320
Like 2005, they got a rocket and not a bomb.

334
00:20:30,320 --> 00:20:33,320
Dude, it's not very toughly wedged in there.

335
00:20:33,320 --> 00:20:38,320
And a closer inspection shows that the rocket didn't have the power to sink their shark.

336
00:20:38,320 --> 00:20:42,320
There's your problem. It's a pretty good deal you called the shark doctor.

337
00:20:44,320 --> 00:20:53,320
So the bullet hole did, in fact, turn this tank into a bit of a rocket, but it wasn't aggressive enough to actually do any damage to Brewster.

338
00:20:53,320 --> 00:21:02,320
We didn't see any indication of ripping or tearing in the mouth or the esophagus, and the tank went into the shark, but it didn't go past the gullet.

339
00:21:02,320 --> 00:21:06,320
So as far as we can tell, it's Brewster 1 Brody Nell.

340
00:21:06,320 --> 00:21:10,320
Still to come, Brody does get his fire in the hole.

341
00:21:10,320 --> 00:21:13,320
Three, two, one.

342
00:21:16,320 --> 00:21:20,320
But next, it's Adam's turn to put his life on the line.

343
00:21:24,320 --> 00:21:32,320
The mythbusters have just confirmed that a tank that becomes a rocket courtesy of a bullet from Brody...

344
00:21:35,320 --> 00:21:38,320
It's a fire-breathing dragon of a shark.

345
00:21:38,320 --> 00:21:43,320
...would not have killed Jaws, so it's time to go for a broke on the boom.

346
00:21:45,320 --> 00:21:51,320
Now with the second test, we are now going to try and implement the fan suggestion of not just shooting the tank with a bullet,

347
00:21:51,320 --> 00:21:59,320
but shooting it on the angle, creating potentially a wider bullet hole and a fatal breach that could potentially cause the tank to explode.

348
00:21:59,320 --> 00:22:00,320
Let me explain.

349
00:22:01,320 --> 00:22:04,320
Now in the previous test, I shot the tank here.

350
00:22:04,320 --> 00:22:07,320
Now I'm going to be attempting to shoot about here.

351
00:22:07,320 --> 00:22:17,320
That is on a much more glancing angle to the surface of that tank, and it could potentially cause either a wider bullet hole or the bullet could dig in and climb back out,

352
00:22:17,320 --> 00:22:21,320
creating a breach that causes the tank to blow up completely.

353
00:22:22,320 --> 00:22:29,320
That's the fan theory, but with a new tank for Adam to take down, will they get the explosion this myth needs?

354
00:22:35,320 --> 00:22:37,320
I heard it go ding!

355
00:22:38,320 --> 00:22:41,320
I see a ricochet point dead center for the tank.

356
00:22:41,320 --> 00:22:43,320
With no boom, the guys go again.

357
00:22:46,320 --> 00:22:48,320
I feel like I moved the tank.

358
00:22:48,320 --> 00:22:49,320
And again.

359
00:22:49,320 --> 00:22:51,320
How much abuse can this tank take?

360
00:22:53,320 --> 00:22:56,320
It's just glancing off the side of that tank.

361
00:22:56,320 --> 00:22:59,320
And a couple more times for good measure.

362
00:22:59,320 --> 00:23:08,320
Now we've fired six glancing shots to the side of the tank to get it to split open, but they're all just ricocheting off, so we're going to try and get it to split open.

363
00:23:08,320 --> 00:23:14,320
But they're all just ricocheting off, so instead of these standard 30 odd six rounds.

364
00:23:15,320 --> 00:23:20,320
We're going to use these, which are 30 odd six armor piercing rounds.

365
00:23:20,320 --> 00:23:25,320
If these can't cause a fatal breach while hitting the side of the tank, well then nothing will.

366
00:23:27,320 --> 00:23:33,320
Fired from the same gun as the film, will this armor piercing projectile finally deliver a detonation?

367
00:23:34,320 --> 00:23:35,320
Gun is hot!

368
00:23:39,320 --> 00:23:42,320
It just bounced right off!

369
00:23:44,320 --> 00:23:56,320
Now we had feedback or criticism rather from viewers that said that Brody could have possibly hit a glancing blow along the side of the tank, which would open it up like a zipper and cause an explosion.

370
00:23:57,320 --> 00:24:05,320
At this point we fired six bullets in that orientation of the tank, and then a seventh one, which was armor piercing, and not one of them actually did that.

371
00:24:05,320 --> 00:24:09,320
So at this point it's first or two Brody nil.

372
00:24:10,320 --> 00:24:15,320
While Brody works on a plan C, what else is on the docket?

373
00:24:16,320 --> 00:24:19,320
Next up, dead shark repellent.

374
00:24:19,320 --> 00:24:21,320
Why would you want a repellent dead shark?

375
00:24:21,320 --> 00:24:28,320
No, no, the use of a dead shark as a repellent that supposedly, the myth is sharks don't like the smell of other dead sharks.

376
00:24:28,320 --> 00:24:33,320
Thus if you have the essence of dead shark on you, you will be protected from sharks.

377
00:24:33,320 --> 00:24:36,320
Well, there's a certain morbid logic to that.

378
00:24:36,320 --> 00:24:38,320
I totally agree, and I think we should test it.

379
00:24:40,320 --> 00:24:43,320
Add to do just that, it's back to the Bahamas.

380
00:24:44,320 --> 00:24:52,320
What is the origin of this story? Well, it comes from fishermen. They learned that if they dragged a dead shark behind their boat, it kept sharks from eating their catch.

381
00:24:52,320 --> 00:24:55,320
We are not going to test this by strapping a dead shark to Jamie.

382
00:24:55,320 --> 00:24:57,320
I'm getting in the water with those guys.

383
00:24:57,320 --> 00:25:04,320
To be a little more scientific, we're going to use this. This little bottle is full of distilled essence of dead sharks.

384
00:25:07,320 --> 00:25:11,320
That's bad to me, but apparently it's kryptonite to a shark.

385
00:25:11,320 --> 00:25:16,320
Although it started as a fisherman's fable, there is science to this story.

386
00:25:17,320 --> 00:25:21,320
So I've done some research into this stench of death thing, and it's pretty interesting.

387
00:25:22,320 --> 00:25:27,320
It was first observed by the ecologist E.O. Wilson and social ants.

388
00:25:27,320 --> 00:25:33,320
He noticed that when an ant died, its buddies picked it up and carried it off to some sort of ant cemetery.

389
00:25:33,320 --> 00:25:43,320
And so he found that what was happening was that the ant was releasing something called oleic acid when it died, and the other ants were picking up on it, and that's why they did that.

390
00:25:43,320 --> 00:25:49,320
Since then, other scientists have noticed the same phenomenon and things like cockroaches and wood lice.

391
00:25:49,320 --> 00:25:55,320
And it kind of makes sense if you think about it. I mean, if something killed your buddy, it might want to kill you too.

392
00:25:56,320 --> 00:26:06,320
That's the theory for insects, but sharks will supposedly head for the hills when they encounter the stench of death. Time to put that to the test.

393
00:26:08,320 --> 00:26:11,320
Here's our plan. First up, of course, we need sharks.

394
00:26:11,320 --> 00:26:20,320
To that end, we buried a bait box full of fish guts in a fake rock down at the bottom, and it is slowly doing our work for us of gathering together a large swarm of sharks.

395
00:26:21,320 --> 00:26:27,320
When the swarm's big enough, I'm going to go down there and release essence of dead shark right into the middle of it.

396
00:26:28,320 --> 00:26:37,320
I will also be underwater, but a few dozen feet away, so I can watch carefully for any behavioral difference in the sharks once Jamie releases the essence.

397
00:26:37,320 --> 00:26:41,320
Whether they get skittish, whether they flee, or whether they don't seem to notice at all.

398
00:26:44,320 --> 00:26:48,320
For Jamie, the preparation's easy. For Adam, not so much.

399
00:26:49,320 --> 00:26:54,320
I got this thing with my ears. It's a long story, but they're broken, effectively, and so I need to go down in a special helmet.

400
00:26:55,320 --> 00:27:02,320
It'll give me full calm. I'll be able to talk to Jamie. Best of all, I'll be able to wear my glasses underwater. That's never happened before.

401
00:27:03,320 --> 00:27:04,320
Slowly but surely.

402
00:27:08,320 --> 00:27:15,320
Adam sinks to the seabed before he then takes up his position and starts crunching the numbers.

403
00:27:16,320 --> 00:27:25,320
All right, I counted at least one, two, three, four, five, six, seven. At least a dozen sharks, if not maybe close to 20.

404
00:27:26,320 --> 00:27:31,320
That's Jamie's cue to get in and swim to their bait-filled fake rock.

405
00:27:33,320 --> 00:27:35,320
How you doing over there, Adam?

406
00:27:36,320 --> 00:27:44,320
It's from here that he'll release the essence of dead shark from a pressurized balloon that should ensure a dramatic dispersal.

407
00:27:47,320 --> 00:27:55,320
Okay, well, this is the real deal, and as you can see, we've got some sharks circling around here. Here we go.

408
00:27:55,320 --> 00:28:00,320
Bounce and clip. Essence of dead shark. Three, two, one, and...

409
00:28:03,320 --> 00:28:13,320
That was a very specific reaction. I mean, it was like instantaneous, the moment you cracked the seal. I saw the sharks like shivering to get the freak out of the way.

410
00:28:14,320 --> 00:28:19,320
Yeah, that's about right. I don't like that smell. I gotta get out of here really quickly.

411
00:28:19,320 --> 00:28:30,320
What was once a shiver of sharks has just 90 seconds later become barren with not a single shark to be seen, despite the bait box staying in place.

412
00:28:31,320 --> 00:28:32,320
But that's not the only thing to note.

413
00:28:33,320 --> 00:28:35,320
The other fish, they don't seem to care.

414
00:28:36,320 --> 00:28:42,320
I totally agree. It's very apparent that the fish don't care about the smell of dead sharks, but all we do, the sharks seem to care.

415
00:28:43,320 --> 00:28:45,320
Three minutes in, and there's still no sharks.

416
00:28:46,320 --> 00:28:51,320
Jamie, it's almost like as if this versus the exclusion zone gets wider and wider.

417
00:28:52,320 --> 00:28:58,320
In fact, it's almost six minutes before some sharks start to venture back, and that's very good news for the myth.

418
00:28:59,320 --> 00:29:00,320
Well, that went spectacularly.

419
00:29:01,320 --> 00:29:09,320
As soon, I mean, the very second that Jamie clipped the zip tie, I watched the closest shark to him turn its head as if it was smelling the worst smell in the world.

420
00:29:10,320 --> 00:29:13,320
And within two minutes, the entire zone is clear of shark.

421
00:29:14,320 --> 00:29:16,320
That shark repellent, as far as I can see, worked.

422
00:29:17,320 --> 00:29:20,320
But it's not science unless it's repeatable, and so we're going to try this test again.

423
00:29:21,320 --> 00:29:22,320
I think we're going to take it up a notch.

424
00:29:23,320 --> 00:29:26,320
Yep, the boys are going to cue a feeding frenzy.

425
00:29:27,320 --> 00:29:29,320
I'm getting rewarned by the tales of these things.

426
00:29:34,320 --> 00:29:36,320
In the Jaws finale revisit,

427
00:29:40,320 --> 00:29:43,320
it's time to bring out the big guns.

428
00:29:44,320 --> 00:29:48,320
The myth of Brody shooting and exploding the scuba tank in the shark's mouth is totally busted.

429
00:29:49,320 --> 00:29:57,320
We have definitively proven through a series of multiple tests that no matter what angle he was shooting that tank, he could not cause it to explode.

430
00:29:58,320 --> 00:30:01,320
But that does not mean that we are done shooting at stuff.

431
00:30:02,320 --> 00:30:07,320
For instance, what if instead of saying, I think we need a bigger boat, Brody's phrase was, I think we need a bigger gun.

432
00:30:07,320 --> 00:30:08,320
Found one.

433
00:30:09,320 --> 00:30:16,320
That's right. Instead of shooting at that tank with a bullet this big, we are now going to be shooting at that tank with a bullet this big.

434
00:30:18,320 --> 00:30:19,320
Here we go.

435
00:30:20,320 --> 00:30:22,320
It's the last chance to learn for the myth.

436
00:30:23,320 --> 00:30:24,320
Gun is hot.

437
00:30:25,320 --> 00:30:32,320
But will around from the .50 caliber sniper rifle, a gun way more powerful than Brody used, finally cause the dive tank to detonate.

438
00:30:33,320 --> 00:30:36,320
Okay, through the bottom of the tank with a .50 cal.

439
00:30:37,320 --> 00:30:40,320
And three, two, one.

440
00:30:42,320 --> 00:30:47,320
Oh, hey, look at that. The tank is still spinning.

441
00:30:48,320 --> 00:30:49,320
Well, the tank didn't blow though.

442
00:30:50,320 --> 00:30:52,320
No, it didn't. It's rolling around behind the shark.

443
00:30:54,320 --> 00:30:56,320
Wow, that is a far out reaction.

444
00:30:56,320 --> 00:30:58,320
This test was always about the explosion.

445
00:30:59,320 --> 00:31:03,320
Can the super high caliber rifle cause a scuba tank to fail explosively?

446
00:31:04,320 --> 00:31:05,320
And the answer is no, it can't.

447
00:31:06,320 --> 00:31:08,320
Yet another test without a boom.

448
00:31:09,320 --> 00:31:10,320
But there's a wrinkle here, right?

449
00:31:11,320 --> 00:31:17,320
Because the larger boat created by the .50 caliber bullet made that much more of a rocket effect, sending the scuba tank, rocketing down the esophagus and into the gullet.

450
00:31:18,320 --> 00:31:20,320
And by every measure we were looking at, killed a shark.

451
00:31:21,320 --> 00:31:22,320
Yep, the bigger bullet.

452
00:31:22,320 --> 00:31:24,320
And by every measure we were looking at, killed a shark.

453
00:31:25,320 --> 00:31:32,320
Yep, the bigger gun created a bigger hole which generated enough thrust to turn the tank into a fatal torpedo.

454
00:31:34,320 --> 00:31:39,320
But by using the bigger gun, the guys were only interested in creating an explosion.

455
00:31:40,320 --> 00:31:42,320
And to that end, this test was a failure.

456
00:31:44,320 --> 00:31:49,320
To try one last time, the guys reset with the tank positioned across Jaws' mouth.

457
00:31:49,320 --> 00:31:52,320
But will this give them their brody boom?

458
00:31:53,320 --> 00:31:57,320
Even though that's not how it was in the movie, the walls are thinner through the middle of the tank.

459
00:31:58,320 --> 00:32:06,320
And if I shoot it clean through there, I think that's our best shot at actually having the whole tank break apart and cause the explosion that we're looking for.

460
00:32:07,320 --> 00:32:08,320
I'm good to go.

461
00:32:10,320 --> 00:32:14,320
In, three, two, one, firing.

462
00:32:16,320 --> 00:32:17,320
Whoa!

463
00:32:19,320 --> 00:32:20,320
What happened?

464
00:32:20,320 --> 00:32:23,320
I can't quite tell what happened. The tank is gone.

465
00:32:25,320 --> 00:32:29,320
Even with a 50-cow hitting the side of the tank, there's still no explosion.

466
00:32:30,320 --> 00:32:32,320
And that means there's only one conclusion to make.

467
00:32:34,320 --> 00:32:38,320
So the fans complained that we didn't do right by our shark. How do you want to call it now?

468
00:32:39,320 --> 00:32:44,320
Look, we have thrown everything we can at the scuba tank in the shark's mouth to get it to blow up.

469
00:32:45,320 --> 00:32:47,320
Armor piercing bullet, 50-caliber rifle and nothing has done it.

470
00:32:47,320 --> 00:32:53,320
I think we've definitively proven there is no way you can get that type of tank to blow up with a bullet.

471
00:32:54,320 --> 00:32:55,320
This thing is totally busted. You agree?

472
00:32:56,320 --> 00:32:57,320
Yep. Let's go.

473
00:32:57,320 --> 00:32:58,320
Alright.

474
00:33:01,320 --> 00:33:06,320
That's not it. Oh yeah, you still get to watch a shark explode. Yeah, this is Mythbusters after all.

475
00:33:07,320 --> 00:33:11,320
Make no mistake, this myth will end with a bang.

476
00:33:11,320 --> 00:33:12,320
Oh!

477
00:33:15,320 --> 00:33:17,320
But first, it's back to shark central.

478
00:33:19,320 --> 00:33:21,320
Where, after a stellar start...

479
00:33:22,320 --> 00:33:23,320
Wow!

480
00:33:23,320 --> 00:33:27,320
And it was like instantaneous, the moment you cracked the seal.

481
00:33:27,320 --> 00:33:33,320
The guys are all set to see if the smell of dead shark can pass the ultimate test.

482
00:33:34,320 --> 00:33:37,320
We're about to do this test again with a critical difference.

483
00:33:37,320 --> 00:33:42,320
The last time we had a bait box putting out a scent trail that the sharks find interesting.

484
00:33:42,320 --> 00:33:43,320
So that's what we had.

485
00:33:43,320 --> 00:33:48,320
We had a bunch of interested sharks swimming through, kind of wondering where the food is.

486
00:33:48,320 --> 00:33:53,320
This time, we're going to have the same, but we're also going to be feeding them down there.

487
00:33:54,320 --> 00:33:55,320
Feeding them a lot.

488
00:33:55,320 --> 00:33:57,320
We want them on the edge of a friends.

489
00:33:57,320 --> 00:34:01,320
This increases the number of sharks, increases how interested in food they are.

490
00:34:01,320 --> 00:34:09,320
It also radically increases our danger, but it is exactly the kind of worst case scenario that you would want a shark repellent to work in.

491
00:34:10,320 --> 00:34:14,320
Deliberately creating a feeding frenzy is seriously dangerous.

492
00:34:15,320 --> 00:34:18,320
So much so that Jamie's taking no chances.

493
00:34:19,320 --> 00:34:23,320
We are in fact talking about creating intentionally a feeding frenzy.

494
00:34:23,320 --> 00:34:27,320
And we're going to have to prepare for that because things could get a little out of control.

495
00:34:27,320 --> 00:34:31,320
In fact, we kind of want them to get a little out of control.

496
00:34:31,320 --> 00:34:35,320
The chain mail should keep Jamie safe, but there's a problem.

497
00:34:36,320 --> 00:34:40,320
Unfortunately, my head kind of stands out like a beacon.

498
00:34:40,320 --> 00:34:43,320
Everything else is covered except my head.

499
00:34:43,320 --> 00:34:51,320
And these masks that allow us to talk, they don't allow me to put the chain mail over it because it messes with the seal.

500
00:34:51,320 --> 00:34:54,320
So the beret is going to have to do.

501
00:34:58,320 --> 00:35:06,320
Like last time, Adam heads in first and it's immediately clear that the sharks are both hungry.

502
00:35:07,320 --> 00:35:09,320
The sharks are trying to eat our camera.

503
00:35:09,320 --> 00:35:11,320
And numerous.

504
00:35:11,320 --> 00:35:15,320
Every now and then one of these sharks comes right towards me with a really curious look in his eye.

505
00:35:15,320 --> 00:35:17,320
I do not like that look.

506
00:35:18,320 --> 00:35:22,320
Next, Jamie enters the ring and the feeding frenzy can begin.

507
00:35:22,320 --> 00:35:29,320
Yeah, these guys are like inches away from me.

508
00:35:29,320 --> 00:35:32,320
You are really surrounded.

509
00:35:32,320 --> 00:35:37,320
With food in the water, the sharks are coming closer than ever before.

510
00:35:38,320 --> 00:35:44,320
For some reason, I kind of feel like I should be keeping my hand close to my body.

511
00:35:45,320 --> 00:35:48,320
Which is perfect for this ultimate test.

512
00:35:48,320 --> 00:35:51,320
Jamie, I think you can do it.

513
00:35:51,320 --> 00:35:54,320
I think we'll count down from five, okay?

514
00:35:54,320 --> 00:35:58,320
Five, four, three, two, one.

515
00:36:08,320 --> 00:36:14,320
When it comes to sharks, the mythbusters have history.

516
00:36:14,320 --> 00:36:16,320
He was like...

517
00:36:16,320 --> 00:36:23,320
From trying to attract them to fending them off.

518
00:36:24,320 --> 00:36:30,320
The guys have spent 12 years putting 25 fishy fables to the test.

519
00:36:30,320 --> 00:36:34,320
What's the deal with my generating moment?

520
00:36:34,320 --> 00:36:36,320
You're there.

521
00:36:37,320 --> 00:36:43,320
But in our own California, it's finally time for the one that got away.

522
00:36:44,320 --> 00:36:46,320
Whoa, whoa!

523
00:36:46,320 --> 00:36:49,320
I know that we are famous for saying failure is always an option,

524
00:36:49,320 --> 00:36:54,320
but having failed to make that shark explode so far, it is time to stop failing.

525
00:36:54,320 --> 00:36:59,320
We are getting rid of the guns and we are going to make this tank explode with an old friend of ours.

526
00:36:59,320 --> 00:37:02,320
That's right, Jamie's favorite, C4.

527
00:37:02,320 --> 00:37:05,320
When in doubt, C4.

528
00:37:05,320 --> 00:37:11,320
Now the amount of C4 we've got on the side of this tank is not enough to blow up that shark, and that's on purpose.

529
00:37:11,320 --> 00:37:20,320
This is enough to breach this tank so we can answer definitively whether the released energy from this exploding tank can blow up that shark like we saw in Jaws.

530
00:37:21,320 --> 00:37:26,320
The tiny amount of C4 is effectively the catalyst in this reaction.

531
00:37:26,320 --> 00:37:29,320
It's always nice when you know you're doing something for the last time.

532
00:37:30,320 --> 00:37:36,320
Just enough to rupture the tank and release almost one million joules of energy from inside.

533
00:37:36,320 --> 00:37:38,320
Alright, there we go.

534
00:37:38,320 --> 00:37:40,320
But what will that do to Brewster?

535
00:37:40,320 --> 00:37:46,320
You've served us well, and I appreciate you donating your fake body for science.

536
00:37:49,320 --> 00:37:51,320
Alright, this one's for the money.

537
00:37:51,320 --> 00:37:53,320
This is the big movie finale shot.

538
00:37:53,320 --> 00:37:55,320
Exploding shark in...

539
00:37:55,320 --> 00:37:57,320
five...

540
00:37:57,320 --> 00:37:59,320
four...

541
00:37:59,320 --> 00:38:00,320
three...

542
00:38:00,320 --> 00:38:01,320
two...

543
00:38:01,320 --> 00:38:03,320
one...

544
00:38:05,320 --> 00:38:06,320
Oh!

545
00:38:16,320 --> 00:38:17,320
That was worth it.

546
00:38:17,320 --> 00:38:19,320
It took the head clean off.

547
00:38:19,320 --> 00:38:21,320
Hahahaha!

548
00:38:25,320 --> 00:38:28,320
It's a boom to make Brody proud.

549
00:38:30,320 --> 00:38:36,320
The air tank delivered such a huge payload that Brewster was blown sky high.

550
00:38:36,320 --> 00:38:43,320
And while the movie scene itself was busted, the explosion was definitely worth the wait.

551
00:38:49,320 --> 00:38:56,320
Surrounded by more than 20 feeding frenzied sharks...

552
00:38:56,320 --> 00:38:59,320
Yeah, these guys are like inches away from me.

553
00:38:59,320 --> 00:39:01,320
You are really surrounded.

554
00:39:01,320 --> 00:39:05,320
This is the ultimate test for the dead shark repellent.

555
00:39:05,320 --> 00:39:09,320
Because if it can shoo away sharks that are in attack mode,

556
00:39:09,320 --> 00:39:12,320
then it'll be well and truly mission accomplished.

557
00:39:12,320 --> 00:39:14,320
Timmy, I think you can do it.

558
00:39:14,320 --> 00:39:17,320
I think we'll count down from five, okay?

559
00:39:17,320 --> 00:39:22,320
Five, four, three, two, release!

560
00:39:22,320 --> 00:39:24,320
Okay, here we go.

561
00:39:25,320 --> 00:39:27,320
Okay, it's out.

562
00:39:27,320 --> 00:39:30,320
Now look at them, they're totally high-tailing it out of the area.

563
00:39:30,320 --> 00:39:31,320
Amazing!

564
00:39:31,320 --> 00:39:36,320
Like rats leaving a sinking ship, the sharks flee en masse.

565
00:39:36,320 --> 00:39:38,320
What an instantaneous effect.

566
00:39:38,320 --> 00:39:41,320
Where there were 20, there's now just two.

567
00:39:41,320 --> 00:39:44,320
Wow, that only took seconds.

568
00:39:44,320 --> 00:39:46,320
There's still sharks around to be sure,

569
00:39:46,320 --> 00:39:50,320
but one second I was in a ball of them,

570
00:39:50,320 --> 00:39:52,320
and now they're just not here.

571
00:39:52,320 --> 00:39:55,320
They instantly left me.

572
00:39:55,320 --> 00:39:58,320
Well, ten years of trying a whole bunch of shark repellents,

573
00:39:58,320 --> 00:40:00,320
we seem to have found one that works amazingly.

574
00:40:00,320 --> 00:40:02,320
Yeah, I'd agree.

575
00:40:02,320 --> 00:40:06,320
You want a shark repellent when you feel like you're in danger.

576
00:40:06,320 --> 00:40:10,320
And I was feeling like things were getting pretty intense there.

577
00:40:10,320 --> 00:40:13,320
So I released this stuff right at the height of that,

578
00:40:13,320 --> 00:40:15,320
and it instantly chilled things.

579
00:40:15,320 --> 00:40:18,320
That's exactly what you want a shark repellent.

580
00:40:19,320 --> 00:40:22,320
Yep, the test literally couldn't have gone any better.

581
00:40:22,320 --> 00:40:27,320
And like last time, it's more than five minutes before the sharks return.

582
00:40:27,320 --> 00:40:29,320
So what's the verdict?

583
00:40:32,320 --> 00:40:34,320
So, our shark repellent works.

584
00:40:34,320 --> 00:40:36,320
That's one way to put it.

585
00:40:36,320 --> 00:40:39,320
A more accurate scientific way to put it would be that our shark repellent worked

586
00:40:39,320 --> 00:40:41,320
on the sharks we encountered today.

587
00:40:41,320 --> 00:40:44,320
Specifically reef sharks and nurse sharks.

588
00:40:44,320 --> 00:40:46,320
But, here is the most interesting fact.

589
00:40:46,320 --> 00:40:50,320
The essence of dead shark we were using didn't come from either of those two species.

590
00:40:50,320 --> 00:40:54,320
So we could extrapolate that our shark repellent might work

591
00:40:54,320 --> 00:40:57,320
against many, many different species of sharks.

592
00:40:57,320 --> 00:40:59,320
And that is darn cool.

593
00:41:01,320 --> 00:41:04,320
So after all these years we found a shark repellent that works.

594
00:41:04,320 --> 00:41:05,320
Yeah, it's confirmed.

595
00:41:05,320 --> 00:41:07,320
I'd say it's totally confirmed. Amazing.

596
00:41:07,320 --> 00:41:09,320
Because being on the water making you as hungry as it makes me,

597
00:41:09,320 --> 00:41:11,320
I need a burger right now.

598
00:41:11,320 --> 00:41:12,320
Yeah, let's go.

599
00:41:12,320 --> 00:41:14,320
Let's get out of here.

600
00:41:14,320 --> 00:41:15,320
Bye sharks.

601
00:41:15,320 --> 00:41:17,320
Thanks for playing.