- This is me in a flimsy cage, in the middle of the ocean at night, surrounded by hungry sharks. We were there experimenting with some mesmerizing bioluminescence we captured in this jar, which was really cool. But unfortunately for
us, the sharks agreed. So once again, I found myself in a precarious situation
risking my life for science. And for that, I blame
my friends at Discovery, because for Shark Week this year they sent me to the
fricking Bermuda Triangle. Now, in the past to celebrate Shark Week, I've ran experiments to answer
important questions such as, can sharks really smell a drop of blood in the water from a mile away? Or given the choice, do
they have a preference for human blood over fish blood? And so this year I'm headed back with some contraptions I built to potentially debunk
a few more shark myths. And our experiments are gonna get us dangerously close to
sharks in the shallows, and then so deep, it's like
we're visiting an alien planet. And we're even gonna
take a critical look into whether the Bermuda triangle
itself is actually cursed. There's a legend on this here island. (everyone screams) - But of course to do
that, I'll need an expert in the paranormal, AKA,
Noah fricking Schnapp from Stranger Things. - This is spookier than the Upside Down. - And so before I head
to the Bermuda Triangle in an eight second travel
montage to meet Noah for the first time, in an
effort to make him feel more comfortable, I'm gonna
harness my inner Hopper. (upbeat music) To kick things off, I reunited with my marine biologist shark
expert buddy, Luke Tipple. - Luke. - Good day, mate. How you doing? - What up, buddy? We learned a lot last year, I feel like. What attracts sharks? What kind of noises I make
when my life's in grave danger? (Mark screams) And then as soon as Noah showed up, we decided we wanna get him right out to see his first ever shark in real life, and to test our first potential myth, which has to do with sharks
attacking people with GoPros. (upbeat music) Come here. Come here. - No. (Mark laughs) - Oh my God. There's no way we're swimming with that. (Mark continues laughing) - No way. - Bonkers, right?
- Oh my God. - [Mark] Look, down here. Look at this.
- Oh my God. No, no, no, there's no way. Are we going in with those?
- We're going in with those. - Oh my God. (water gurgles)
(Noah yells and Mark laughs) - No, I'm going home. - And so while Noah
reconsidered his life choices, we came up with a game plan. All right, Luke, last
time we were out here, we have these like 360 cams on a stick, and the sharks went for it. Like a number of times, they
would bite at it, right? And I've actually heard
that sometimes you go on a dive, like in
Hawaii, they'll actually tell you you cannot bring a GoPro, because they say the sharks
are attracted to, like, the electromagnetic waves
and it feels like, eh. Is that true?
- I think there's something to it. - According to Luke, he's
definitely seen sharks snap at GoPros on a selfie stick. But it was unclear if that's just 'cause you're shoving the stick way
out in front of their face, or is there's actually some
kind of electromagnetic waves from the GoPro that got them excited. And that's sort of an
important distinction if you own a GoPro. We prove that they love
the electric fields, maybe don't attach one to your head. So, we came up with an
experiment to test this. We would dive down and Luke
would be holding a selfie stick with the GoPro actively filming inside. And then as a control, I would be right next to him with
an identical selfie stick with an identical GoPro
housing, but it would be empty. So the only difference
between these two would be the tiny electrical field
coming from the filming GoPro. And then at that point we
just count how many times each of our selfie sticks
got bumped or attacked. And while I was obviously
a little skeptical, there is some validity to the theory here. Part of the reason sharks
have existed as apex predators for 450 million years
is because they detect and hunt their dinner, not
only with the same five senses we do, but with two bonus senses as well. Their sixth sense is to detect
even slight pressure changes in the water in all directions
around them at all times. And then their seventh is their ability to detect electric fields. That's what all these little
dots under here are for. And this matters because
when any muscle contracts, it gives off an electrical signal. That's how the brain controls them. So sharks can sense a
fish using its muscles to try and swim away or even
a completely stationary fish simply because of its beating heart. And so with the testing plan in place, it was time to gear up and enjoy Noah's first ocean scuba dive experience with a warm welcome
from 25 swarming sharks. - [Noah] Oh my God, there's so many. - [Luke] We have about 20
Caribbean reef sharks here, and Noah's looking pretty freaked out. - [Noah] This is unreal. - [Mark] So we set up camp on the bottom and started the experiment. And it seemed at first they were kind of scoping us out for a bit, after which they got a little bit more confident. - [Luke] Okay, we got
one hit on the camera. There's a second hit on the camera. - [Mark] I got a hit. - [Luke] Well, I've definitely
had two, but no bites. - [Mark] So after about 10 minutes, while there were a few close calls- Oh gosh, oh gosh, right by my face. And certainly some interest
in our selfie sticks, there were definitely no attacks yet. So, we headed back up to
tally and compare our results. Yeah, that's the scariest part, right? They swim, like, right at your face.
- Yeah, like they're coming like this. I don't know
- Yeah, and at the last moment.
- if I should move or- - they, like, try to
see how scared we are. - They swim right past me
and they're like eyeing me. And I'm like, do I keep-
- (laughs) Me, too. - Do I, like, look away, like- - (laughs) Yeah, don't
look them in the eye. When we looked at the footage, Luke's running GoPro
got bumped five times, while my empty camera
case was only bumped once, which was interesting,
but I wouldn't exactly call that a clear cut result to the rumor that sharks will attack GoPros because they mistake the
electric fields for prey. But lucky for us, I had a backup plan to get more conclusive evidence. I think to really level it up, I've got something over
here I wanna show you guys. Dun, duh, duh, dun,
(everyone laughs) duh, duh, dun. - Woo.
- Padabow, padow, padow, pow!
- How many GoPros is that? - I'm glad you asked, Luke. 21! Okay, so we're, this is a twofer. First of all, we've got a bunch of GoPros, so if they're interested in one, we'll take it to an extreme, and they should really
go crazy for this, right? - Yeah, if they don't like this one, then they don't like GoPros.
- Exactly. But the second purpose for this rig is because the 21 cameras
are equally spaced apart, this is a waterproof version of that fancy bullet time rig made famous by the Matrix. Now, two years ago I came
up with a poor man's version of this by sticking a 360
camera to the end of a harpoon, and that worked pretty
well as you could see here. But we tested this new and improved rig at the pool that morning,
and I was even more hopeful for this version, because we were able to get some super dope shots like this one. Now, Caribbean reef
sharks are pack hunters, and this is why some argue they're the most dangerous sharks
in the Bermuda Triangle, because they get each other
worked up in a frenzy. And so my hope was, the
sharks would in fact get really worked up by all the GoPros to the point that it was a frenzy. Because I'm pretty sure
that's just something Noah would want to experience underwater, you know,
- Oh! - up close and personal. So, now that his mind
was mentally prepared for what might lie ahead, it was time to get back in the water
for the follow-up test. I gotta pee, and luckily two years ago we proved that sharks aren't
attracted to urine, so, I'll be fixing that situation
in about five minutes when we're in the water. (Mark splashes loudly) - Yeah, the rig! And so while we conducted our super-sized follow-up experiment,
we took the opportunity to capture some bullet time shots as well. In the end, they just
weren't that interested in a rig with 21 running GoPros, so it was pretty clear
that the myth that sharks will attack a GoPro thinking
it's food was busted. Now to be fair, they can
almost certainly sense that electrical field, which is why they would sometimes
bump it out of curiosity. It's just that it would
be such a different electromagnetic signature
from what they'd evolved for hundreds of millions
of years to consider food. So, you're totally cool
to whip out your GoPro next time you find yourself
surrounded by sharks. And so while we did have
some cool bullet time shots and a busted myth, what we didn't have was Noah's front row seat to a feeding frenzy. But luckily I had another backup plan, because before we got in, I introduced him to my secret recipe from last
year, the super chum smoothie. And while it might make us humans gag, sharks love this stuff. So, the plan was to have the
boat crew fill this canister with the super chum and
then drop it overboard, hopefully creating a real life
sharknado on the way down. And now since our experiment
had concluded down below, I let the boat crew know
it was time for plan B. We got the sharknado. Here we go. Coming in hot. There it is! Oh, it's coming down fast! (laughs) Oh, it hit the bottom. They're converging! They're definitely agitated, they're moving around it trying to figure out what's in the box. Oh, they're really going for it now. (laughs) Yeah! Sharknado! Sharknado! - [Luke] One of the sharks
just bit to your right. - [Noah] No way. I think our smoothies worked. - [Mark] Dude, they like what we've done. - [Noah] Why's it feel like there's, like, double the amount of sharks now? - [Luke] Hey guys, they're
getting pretty gnarly. I want you back, back, back! - [Mark] Ooh, they love it. Yeah, this getting crazy, I think we better hit the boat. - [Luke] Time to head up. - [Mark] Okay. So with feeding frenzy
crossed off the bucket list, and even another dive later
where Andy captured this footage of a super rare great hammerhead,
Noah innocently inquired about a creepy looking
lighthouse near our dive spot. We should ask if we could explore it. - Oh God. - You know what? What's the deal with the lighthouse? - It was brought here in 1952, and that's when they actually
had the first accident. There was a ship that wrecked here, and everyone died except for one kid. This five year old. He survived, they found
him and everything. But they said that you see a spirit here they call the gray lady. And on a full moon you can hear her moaning at night for her son, you know? So it's pretty spooky, man. - What's the name of it? Does it have a name? - So, I mean it's called the Great Isaacs but the locals call it the Ghost Island. - Of course they do. (laughs) - (laughs) A lot of spooky stuff, man. - We should-
- Should we check it out? - Yeah, we should. Are we cool? Can we go explore the lighthouse? - [Andy] Yeah. (Mark laughs)
- No problem. - All right. - Andy said it was cool. (laughs) - [Noah] Let's get to it. - And while this was
possibly a really bad idea, it would be a good chance to
gather some firsthand evidence behind all the Bermuda Triangle lore. Dude, I thought that was the gray lady. And so we started exploring
and just the whole vibe for this place was legitimately creepy. Now, I'm not gonna show you everything that happened on Ghost Island. To see that, you gotta get Discovery Plus, 'cause it has all the Shark Week show this year and from past years, like my show with Shaq and Dude Perfect. Not to mention my upcoming
engineering revenge show based off the glitter bombs. So to get it, just download Discovery Plus for free for seven days, and after that, it's just like five bucks a month. So, this excursion was a
useful data point for me as to whether or not the Bermuda
Triangle itself was cursed. Oh dude, this is just something the gray lady would wear, too. But I still wasn't ready to
form a conclusive viewpoint until I could do a bit
more research myself. And so after encountering
the largest hurdle I've ever seen by a factor of four, we hopped back on the boat to return home. It was a long day and we
needed to get some rest, because the next day we
were gonna hop on some real fancy snow globe
submarines and descend way down to try and lure some sharks
out deep on their own turf. And to do that, I had a few
more tricks up my sleeve. And the first trick was this stuff. Now it doesn't look all
that impressive like this, but when you simply add it to water, something remarkable happens. It's called BioLume,
and it's the exact same chemical reaction that occurs in nature when an organism uses bioluminescence. It's totally non-toxic and natural to the point that you
could drink this water. I mean, how cool is this? When we're deep underwater,
I wanna see how well the sharks can see this stuff
because it's commonly said that sharks have really bad eyesight. But I've heard that, too, is a myth. That each one of their
senses has a different range. Their electro receptors
we demonstrated earlier are effective to hunt
prey in about this range. And in previous years,
I've investigated the range on their sense of smell
for something like blood in the right conditions and
it can be as much as a mile. But allegedly they rely quite a bit on their sense of sight for hunting, too. And they can see as far as
a football field in length. And while they can't see in colors and could only see in black and white, their night vision is 10
times better than us humans, which is why we wanted to test their eyes with this glowing stuff
in darker conditions. And my second trick was good
old, reliable super chum, but with a catch,
because you can't exactly just open the hatch and pour some out when you're 600 feet underwater. Plus, there are some pretty
strict safety protocols about what you can attach to the outside of the sub due to the crushing
pressures at that depth. So, we handcrafted this beauty. An environmentally
friendly super chum torpedo we could fire from the sub. Everything is made from wood and this middle section is balsa wood, so it would easily break away
if a shark chomp right here, because that's where the
super chum is contained in a bag that biodegrades in the water. And as you can see from our
last minute pool testing, the idea was for the sub's mechanical arm to pull this lever, which would allow the surgical tubing to contract, forcing the torpedo out,
opening the bag of super chum in the process, but intentionally only traveling a short distance, where we could still
see it close to the sub. So with our final test
looking pretty good, it was time to head back out to sea for both of our first ever
dives in a bonafide submarine. (Mark laughs) - Oh my God. Which one's mine? - I think you're this one, Old Yeller. - [Noah] Oh my God.
- [Mark] Look at this. - Shall we get in? - Let's do it. (dramatic music) (seagulls squawk) - [Nomad Operator] This is Nomad reporting that hatch is
secure and I am ready to dive. - Top Side, Nemo, please dive. - Oh my God! (dramatic music) (peaceful piano music) - Nemo, good to see ya. You ready to go on a 270? - Okay, Nomad, I'm ready when you are. (peaceful piano music) - So, we're at 130 feet right now. - Yeah. - And we're going 600. - We're gonna go deep, man. - This is Nomad reporting. We are approaching the edge of the wall. - [Mark] And the wall was
basically a sheer underwater cliff like the Grand Canyon,
and we were going over it. On the way down, at around 300 feet, you could see signs of
where a coastline used to be before the end of the Ice Age
when all the glaciers melted. And he said everywhere he
dives around the world, you see the same thing
at about that same depth. And the deeper we went, the darker it got. Now it was time to lure some sharks out. - Yeah, let's settle down here. I'm gonna get the manipulator going. I'll let you drive this. - Oh, wow. This is like the arcade,
playing the claw game. Nice! Oh, yes, yes. Look at that glow. - [Nemo Operator] Nomad, Nomad, Nemo. We are ready to fire the torpedo. - [Nomad Operator] We are attempting now. Oh, torpedo launched.
- Yeah, baby. We launched it! (laughs)
- Woohoo! (laughs) - [Nemo Operator] Secondary
torpedo launch now. Ooh. (laughs) - Oh, my. No way! - [Mark] And with a bit of an assist, the second chum torpedo was in play. And now the sharks just come swimming. Here sharky, sharky, sharky. (suspenseful music) And as we waited, it dawned
on me that as humans, we were almost certainly the first and quite possibly the last to ever explore this exact spot on planet earth. (suspenseful music) Oh, the fish are coming. Whoa, yeah, dude. The fish love it. Whoa, whoa! (laughs) (peaceful music) And a number of times, we thought we saw some sharks lurking in the shadows, but it was always just fleeting glimpses. So, we decided to try our
luck at a different spot a bit higher up the wall with
our remaining two torpedoes. (dramatic music) - I think I see some.
- Oh, I see one out there. - [Mark] You see one? - Way out in the distance. - [Nemo Operator] Oh, there's a shark. - Oh my God.
- There's more. - [Mark] And here we hit jackpot. - [Nemo Operator] Whoa, look at 'em all. - When they bump it, you
feel the whole sub rock. That's terrifying. Yes. Oh, you're angry. He's right on it. - [Noah] Oh my God. - Oh, he's right underneath us. Holy cow. (upbeat music) That's rad. Look at that. Top Side, this is Mark. Chumpedo worked flawlessly. We are surrounded by sharks. And so with mission accomplished
and our air running low, we decided to make our
way back to the surface. The BioLume was just so
cool, but admittedly, we sort of confounded our
experiment by releasing the chum torpedo at the same time. So, we still wanted to
see up close if the sharks will be able to see it
with their night vision and then come check it out. And with the subs already put away, that meant we had to get in the ocean in the Bermuda Triangle in
the middle of the night. I make a point of not swimming
in the ocean at night. I especially make a point of not swimming in the ocean at night surrounded by sharks.
- Right. I feel like that's just general knowledge. You don't go in the ocean at night. - That's a good rule of thumb. If it wasn't the sharks
that would kill me, it would be my family, when they saw my ability
to make poor choices. - [Mark] Okay Noah, here we go baby. All right, buddy, you ready? - [Noah] I'm scared. - [Mark] Okay, we need
the bottle of stuff. (dramatic music) - [Mark] This is bonkers. Oh, that's cool, dude! That's like X-Men. I think you guys can throw a bunch on top. Whoa. That's crazy. Look at that. That's cool. - [Noah] I feel like I'm in a dream. - [Mark] This seems pretty cool, but I want try it with like, with no lights. Okay, total darkness. Super not okay with this. Now, let's try it like this. Oh, this is a lot creepier now. With no lights on. This is the trippiest
thing I've ever seen, man. (suspenseful music) All right. All right, we got blue. Whoa, shark, Noah, shark, shark! A shark just swam by. - [Noah] Where? Oh my God.
(Mark screams) - I'm starting to notice bigger gaps in this chain link fence all the- - [Noah] This is the scariest
thing I've ever done. (suspenseful music) (Mark screams) - [Noah] Oh my God, this is unreal. (Mark screams) - Another, oh my God! There's a sizable hole in this cage. Who made this thing? (dramatic music) Holy crap. (laughs) Oh. - [Luke] And you guys
are good to come out. - Okay.
- Hold on, hold on. - [Luke] Yep, thanks.
- Oh my God, that was the scariest thing I've ever done in my entire life. That was unreal. There's like 10 sharks circling around us, like, I thought they
were trying to eat us. That's actually my nightmare. Like that-
(Mark laughs) - it can't get scarier than that. - We threw the BioLume
off, and then pretty soon we flipped the lights on,
there's was bunch of sharks, so. BioLume went in, sharks came. (crew members clap)
- Nicely done! - Nice dog, we did it.
- Come on, let's get the rigs. - Once again, it was an
incredible experience to learn more about our
friends, the sharks, and as a bonus, I survived. Which leads us to our
final unanswered question. Is the Bermuda Triangle really cursed? Has it caused the mysterious disappearance of thousands of boats and planes? As a kid, I loved
reading books about this, trying to unravel the mystery. And as an adult with a
background in science, I was shocked to discover
that significantly more boats and planes do disappear there. But, there's a catch. At a random moment, you can
open a flight tracking website and take a snapshot of
all the planes in the air and it will look something like this. Now keep in mind, this region
here is the Bermuda Triangle. Can you spot the problem? Way more boats and planes crash there, because way more boats
and planes travel there. It's in the middle of
some of the most heavily used shipping routes and
flight paths in the world. It's like how California is the state with the most car accidents because
it has the most people, not because there's some supernatural force causing them all. Statistically speaking,
the Bermuda Triangle is no more dangerous for a single boat or plane than anywhere else. And you can double check that
answer in the back of the book by checking if insurance
companies charge any more for vessels traveling through that region. And it turns out, they don't. And yet, as sure as I
am about my conclusion, our first mate, Andre, had a way of telling firsthand
stories that even I'll admit chipped away at my
resolve just a little bit. - We had some guys fly in,
like, this magnetic field running through and up to this day, they still can't tell what it is. Bermuda Triangle, guys. You never know, man. You never know. (upbeat music) (Mark screams) (snowballs thump)
