The Nektons are a family of underwater explorers who discover the hidden secrets of the oceans, including sunken cities, sea creatures and pirates.
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00:00I have a question for Keiko for me I know it's unprecedented but you're the most accomplished
00:24marine biologist I know. Was that flattery? I don't flatter ever. The scientific arm of the
00:31World Oceans Authority is very concerned about some sea life we've been monitoring with trackers.
00:35Once I put a tracker on a sea snail for a whole year. We know it moved three meters. It was
00:41science. These dots are the individuals being tracked but for each individual there can be
00:47hundreds in a school. They're all grouping together? And we have no idea why. What sort
00:54of fish? All kinds. Bass, rays, and not just fish. Dolphins, turtles, seals. They've got nothing in
01:01common. Maybe they overcame their differences and formed a football team. At first we thought they'd
01:06all been sucked into a fast warm water current. But no. Sorry football is silly. Water polo maybe.
01:13Ant be serious. Okay so they're running away from something. Like a fontaine?
01:20Ugh. Commander, how can a turtle travel as fast as a dolphin? That is the question.
01:29Commander Pyrazone, we'll take the case. Well I only wanted advice. Sorry you got us intrigued.
01:35It's too late now. Word. All right.
01:38My family are explorers. We have been for generations. While others look up to the stars,
01:44we know there are an infinite number of things that shine in the darkness below.
01:48There are things lurking in the seas that long ago vanished into myth.
01:52My family are explorers and we explore the deep.
02:07I'm getting a signal from the WOA trackers now.
02:28Amazing. I've never seen so many species of fish that close together.
02:32It's like they're right on top of each other. That's weird.
02:36Let's ask the other fish expert. Please. You're asking Jeffrey? Of course. Jeffrey,
02:44why would perfectly sensible fish from all different species run away from home together?
02:51Right. Jeffrey has a theory. He's a fish. Exactly. With unique insights into fish motivation.
02:59And Jeffrey favors the circus theory. They ran away to join the circus?
03:05Of course. Don't tell me you haven't thought about it.
03:08The group have slowed down at a commercial tuna farm about five nautical miles ahead.
03:14Maybe they're all hungry. Silt everywhere. What could have churned up the water like this?
03:21I'm not sure. But our visibility is limited. Something else on sonar. Slowing engines.
03:29The signal's gone. No, it's back.
03:37That's weird. It just moved. Maybe it's all these dirt particles messing with the signal.
03:42Let's not take chances. Coming to port 10 degrees.
03:49Up ahead. What? Nets everywhere. Look out. Hold on.
03:59Ah! There's more. Full reverse. Brace yourselves.
04:16That can be a good sound. It's the propellers.
04:22That's it. We're officially dead in the water.
04:26What could have done this? Maybe the tuna who were kept here did it.
04:31The tuna all just ran away to join the migration? Yes. A massive tuna jailbreak.
04:37Okay. Big pull. Now.
04:46Come down, Jeffrey. Everything's fine.
04:48Come down, Jeffrey. Everything's fine.
04:52Nectons, we have a strange development. Another cluster of sea creatures is forming.
04:58Again, it's all different kinds. Another cluster? That's interesting.
05:04Where? Around 20 nautical miles southeast of you.
05:08Will, you and Fontaine keep following the original group. They're moving slower now.
05:12You should be able to catch up to them quickly. Right.
05:14We'll try to get a look at this new group. Thank you.
05:18You'll be okay? We're good to go.
05:31Wow. These new guys are fast. But the Aranax is faster.
05:36We should have a visual in about six minutes.
05:44Wait. Our group is diving. Fast.
05:48Hold on. I don't get this.
05:54Some of the creatures in this group can't possibly dive this deep.
05:57Maybe they have a submarine. That's not a serious suggestion.
06:05Will, your group has stopped descending. They've turned back.
06:09Roger that. We're monitoring. In fact, they're heading straight for us.
06:13Keep your eyes peeled. Sonar's locked on a solid object.
06:18What object? I don't know.
06:20But it's closing fast. They're coming straight at you.
06:23Turn, Will. Now! The animals aren't traveling together.
06:32They were eaten. Megalodon!
06:40Aranax to rover. Come in. Aranax to rover. Dad, come on. Answer.
06:46Aranax to rover. Come in. Will, Fontaine, we're coming. Talk to me.
06:52Where are they? 2.1 nautical miles ahead.
06:56Bearing 117. We're closing fast. Rover to Aranax. Can you hear me?
07:01Dad, Will, why weren't you answering? We're inside a Megalodon.
07:06Holding on to its gills. We're slipping.
07:13Full thrusters.
07:23Yes! Got it. We're stable for the moment.
07:25But there's a constant flow of water pressing against us, Mom.
07:28We can't fight against it. We can't force our way out.
07:32We'll be there in 30 seconds. Will, try to hold on.
07:37If we keep slipping... Mom, please hurry.
07:45Should be getting close to a visual. Wow. Incredible. So cool.
07:53It's immense. Maybe 40 meters long.
07:58We're coming up on it now.
08:17No!
08:28Will, Fontaine, what just happened? Whatever that sun move was, it's a swanster.
08:36The Megalodon reacted when it saw us. Then move away. Now.
08:40It probably sees you as a rival. Don't antagonize it.
08:44Understood.
08:57What have you got?
09:01That thing should have been extinct for 2.6 million years.
09:05Something practical, Ant.
09:07Its closest living relative is the Great White Shark.
09:11Megalodon was the single biggest predator on the planet.
09:15We're listening here. Was that supposed to cheer us up?
09:19Related to the Great White. Great Whites are constantly moving, remember?
09:23So what?
09:25So the water flow isn't going to stop. Which means we can't get out?
09:29Unless we can stop the Megalodon from moving.
09:33Listen, these things would never expect anything to challenge them head on.
09:37I don't think crashing into it is going to stop it from swallowing half our family.
09:41No. We turn off our lights, then come at it, head on, fast.
09:45And at the last second, we blast it with the lights, strobes, everything.
09:49So we'd shock it and stop it without hurting it.
09:53And hopefully, the rover would be able to get out.
09:57It's a big gamble.
10:05It sounds like the only gamble we have.
10:09Okay. Ant, turn off the lights. I'll get us ahead of this creature.
10:23Coming around.
10:27We both need to time this perfectly, so be ready, Ant.
10:31Accelerating.
10:39I'll wait till the last second.
10:43Will and Fontaine, when it stops, hopefully it will open its mouth, then gun your engines.
10:47Okay, Fontaine, be ready.
10:51Okay, Fontaine, be ready to let go with the arms.
10:55I'm ready.
11:01Get ready, Ant.
11:05Proximity alert.
11:09What? There's something else out there.
11:13Mom, it's another group. It's another Megalodon.
11:21Mom!
11:35Will, there are two Megalodons. Repeat, two of them.
11:43We hurry. Not sure we can hold on for much longer.
11:47Hold it, Hope. We're trying not to.
12:01Okay, new plan. We get a steel cable.
12:05Super strong. Excellent choice.
12:09And we loop it around the Megalodon. Once it's fastened, we reverse the Aranax and bring the shark to a stop.
12:13Wait, wait, wait. You want to lasso a Megalodon?
12:17It sounds crazy, doesn't it?
12:21Um, yeah. But it's times like these I know are related.
12:25It's brilliant! Come on!
12:43Okay, getting a little too intense here.
12:47We'll need a knight to get that close.
12:51To loop it over.
12:55You're not going out.
12:59In the Magknight, it's the strongest.
13:03I'm going along with your plan here, but you need a knight.
13:07I'll go out. Mom, you need to pilot the Aranax.
13:11Jeffrey is an amateur at best. It's hard to drive a submarine when you don't have opposable thumbs.
13:15No one pilots better than you, so it has to be me out there.
13:19I absolutely hate it.
13:23Dad and Fontaine need it to happen. Now!
13:27What if the other Megalodon gets involved? It's clearly protecting its mate.
13:31If it spots me, I'll get out of there.
13:35Please stay safe.
13:41This better work, big guy.
14:01Will, I'm leaving this channel open. You'll need to move fast when we do this.
14:05Uh, we have a giant shark stomach behind us as motivation.
14:09We'll move faster than we ever have before.
14:13Excellent. Then we'll release the cable before the animal gets hurt.
14:17Aunt, let's do this. Getting into position now.
14:29Okay, Aunt, I'm moving closer.
14:39Your speed is good.
14:43Ready to drop.
14:47Let's count it down, Aunt. We need to time it just right.
14:51Okay. Dropping in 5, 4, 3, 2, 1.
14:59Uh-oh. He knows I'm here.
15:03Do we have an even bigger knight?
15:07Be ready. Stay alert.
15:11It's not like I'm relaxing here, Dad.
15:15Aunt, are you alright?
15:19Am I alright? I'm riding an extinct Megamonster.
15:23This could be the single greatest moment of my life.
15:27Aunt, half of your family is about to be eaten.
15:31And working on saving you.
15:37Whoa!
15:41Aunt! What's happening?
15:45I'm okay. I'm okay. I just have to...
15:49This isn't good.
15:53Aunt! What happened?
16:01Things just got a little more complicated.
16:07Aunt? Don't worry, Mom. Just get ready to pull.
16:11And you, keep looking the other way.
16:15Oh, come on. Come on.
16:19We're hooked up. Go for it!
16:23Will and Fontaine, get ready. I'm going into full reverse.
16:27Now!
16:37Fontaine, release now!
16:45We're out!
16:49Mom, we're... Dad?
16:53Oh, come on!
16:57Get out of there! Everyone, back to the Aeronacs!
17:07Whoa!
17:19That pull was too hard. The cable release is jammed.
17:23We'll need to cut it with our lasers. Aunt, get back to the moon pull.
17:37What just happened?
17:41We lost the prop. We're only running at 50%.
17:45I'll get the Megalodon off your tail.
17:49No, Aunt!
17:53We can't keep up with the descent.
17:57We'll have to lock onto the Aeronacs magnetically.
18:01Do it as quickly as you can, Fontaine. We've got one shot at this.
18:05It's nearly impossible with one engine down.
18:09We're out of time. Lock on.
18:13Attached!
18:27I can't cut the cable. We're too far off target.
18:31Aunt, can you just... I'm kind of busy here, Fontaine.
18:35I've got company. This company wants to eat me.
18:39Wait. This company wants to eat me.
18:43Yes! How is that a thing to be happy about?
18:47Mom, I need you to go full throttle on the Aeronacs and get that cable extra tight.
18:51What are you planning here, Aunt?
18:55Trust me.
19:01Aunt?
19:05What are you doing?
19:09Don't stop. It's right on top of you.
19:13I know. I have a giant set of razor-sharp teeth chasing me, Mom.
19:17I may as well use them.
19:21Come on, big guy.
19:25Don't I look tasty?
19:29That's right. Come get me.
19:33Whoa!
19:55Wow. Everyone, back inside.
19:59Let's leave these two alone.
20:07These pictures were taken inside the Megalodon's mouth?
20:11What can I say? We're thorough.
20:15We've determined they're a male and a female. They were meeting to mate.
20:19They just needed to eat a lot before that.
20:23And they really don't care what they eat, whereas I'm very discerning.
20:27These creatures work together. They may even partner for life.
20:31But they're supposed to be extinct.
20:35It's not the first time humanity thought a creature was extinct when it wasn't.
20:39True. But why haven't we found Megalodons before this?
20:43Technology improves all the time.
20:47And maybe they usually stay in secluded areas.
20:51Very secluded. The tracker signals have vanished completely.
20:55They must have returned to somewhere very deep.
20:59But what can we do if they ever come back?
21:03Do you really want to think about that?
21:07What can we do?
21:11Personally, I never want to have to use myself as a giant shark lure again.
21:15They've lived here untouched and untroubled for millions of years.
21:19All we can do is be ready if we encounter them again and stay out of their way.
21:23The sea is their home. We should respect the biggest predators in the ocean.
21:27Who knows what they could be protecting us from?
21:53NASA Jet Propulsion Laboratory, California Institute of Technology