0:00:02 > 0:00:05- SIREN WAILS - 'Octonauts, to your stations!'
0:00:05 > 0:00:08Barnacles!
0:00:08 > 0:00:09Kwazii!
0:00:09 > 0:00:11Peso!
0:00:37 > 0:00:41- Explore!- Rescue!- Protect!
0:00:41 > 0:00:43Octonauts!
0:00:52 > 0:00:54CAPTAIN BARNACLES GRUNTS
0:00:56 > 0:00:59We're all connected and ready to go, Cap.
0:00:59 > 0:01:02Let's turn on the Octo-cam and see if it works.
0:01:10 > 0:01:13Barnacles to Shellington, is the Octo-cam working?
0:01:13 > 0:01:16Yes, Captain. The picture of the hermit crab
0:01:16 > 0:01:18is coming in nice and clear.
0:01:18 > 0:01:22No-one's explored this part of the ocean before. With this Octo-cam
0:01:22 > 0:01:26- we can film the sea creatures who live here.- Very good.
0:01:26 > 0:01:30Barnacles out. Good work, Octonauts. Let's head back.
0:01:38 > 0:01:41CAPTAIN BARNACLES WHISTLES
0:01:46 > 0:01:47CLATTER
0:01:47 > 0:01:49What's that sound?
0:01:50 > 0:01:52Nothing, I guess.
0:01:52 > 0:01:55BARNACLES RESUMES WHISTLING
0:01:59 > 0:02:00CLATTER
0:02:01 > 0:02:03HE RESUMES WHISTLING
0:02:03 > 0:02:05CLATTER
0:02:05 > 0:02:08That sound is coming from outside the GUP.
0:02:08 > 0:02:11Is anybody out there?
0:02:11 > 0:02:15Nobody but those tiny, skinny black fishes.
0:02:15 > 0:02:17The GUP probably just needs a check up, Captain.
0:02:17 > 0:02:21We'll be home soon and then you can take a look.
0:02:22 > 0:02:23Have some food.
0:02:23 > 0:02:27Thanks, Tunip. These fish biscuits are delicious.
0:02:27 > 0:02:29- Fascinating.- Brrrp!
0:02:29 > 0:02:34How many sea stars are travelling together in this group? Let's see.
0:02:34 > 0:02:36There's one, two... Huh?
0:02:36 > 0:02:38I...
0:02:39 > 0:02:42Come back! Captain!
0:02:42 > 0:02:46- Something's wrong with the Octo-cam. - Let me see what I can do.
0:02:48 > 0:02:50It's not working.
0:02:50 > 0:02:54Hm, that's strange. The Octo-cam was working perfectly when we left.
0:02:54 > 0:02:56Cap, can you come down here?
0:02:56 > 0:02:59There's something you've got to see to believe.
0:03:00 > 0:03:04Check out these three perfectly round holes in the GUP.
0:03:04 > 0:03:06What could have made those holes?
0:03:06 > 0:03:11Not what, Captain - who? Look at this.
0:03:11 > 0:03:13A whole set of teeth...
0:03:13 > 0:03:16..Strong enough to take a bite out of the GUP.
0:03:16 > 0:03:21Hm, first our GUP was damaged and now the Octo-cam isn't working.
0:03:21 > 0:03:24This smells fishy. Tweak, sound the Octo-alert.
0:03:24 > 0:03:27- SIREN - Octonauts, to the launch bay!
0:03:37 > 0:03:40There's something wrong with the Octo-cam.
0:03:40 > 0:03:42We've got to get back there.
0:03:42 > 0:03:45I'll have those holes in the GUP-A fixed faster than you can say,
0:03:45 > 0:03:48"bunch of munchy-crunchy carrots!"
0:03:48 > 0:03:51Thanks. See if you can work out whose teeth these are
0:03:51 > 0:03:54- while we check on the Octo-cam. - All right.
0:03:54 > 0:03:58What kind of animal would leave their teeth behind like that?
0:03:58 > 0:04:02Don't worry, I'll get to the tooth - I mean truth!
0:04:02 > 0:04:03CHUCKLES
0:04:03 > 0:04:07This is a mystery and we've got to solve it.
0:04:07 > 0:04:10Kwazii, Peso, into the GUP with me.
0:04:15 > 0:04:17It's not working all right.
0:04:17 > 0:04:20Not beeping or whirring or nothing.
0:04:21 > 0:04:26And here's why - three holes in the rubber cable.
0:04:26 > 0:04:28just like the holes in the GUP.
0:04:28 > 0:04:30Three more holes here.
0:04:30 > 0:04:32And here.
0:04:32 > 0:04:36- Who's biting our equipment?- Hm.
0:04:38 > 0:04:42Captain, Kwazii, I've found another set of teeth.
0:04:42 > 0:04:43Where?
0:04:43 > 0:04:47Argh! They were here just a second ago.
0:04:48 > 0:04:51Look!
0:04:51 > 0:04:53It's gone.
0:04:53 > 0:04:56There's nothing around but those skinny little fish.
0:04:56 > 0:05:00It's like someone's playing tricks on us and then disappearing.
0:05:00 > 0:05:02Who would do that?
0:05:02 > 0:05:04I know, but I wish I didn't.
0:05:04 > 0:05:07It is none other than the tri-toothed terror!
0:05:07 > 0:05:09Who-toothed-what-er!
0:05:09 > 0:05:13The tri-toothed terror - a giant sea monster
0:05:13 > 0:05:17with three huge sharp teeth. He sneaks up on pirate ships,
0:05:17 > 0:05:22bites them with his enormous teeth, then disappears into thin air!
0:05:22 > 0:05:26You think the tri-toothed terror could be around here, following us?
0:05:26 > 0:05:30I don't think we're dealing with the tri-toothed terror.
0:05:30 > 0:05:35If it isn't the tri-toothed terror that made these holes, what was it?
0:05:35 > 0:05:37Hoo-hoo-hoo-hoo!
0:05:37 > 0:05:38Where's that coming from?
0:05:38 > 0:05:41Hoo-hoo-hoo-hoo!
0:05:41 > 0:05:43Hoo-hoo-hoo-hoo!
0:05:43 > 0:05:45It's a blue whale.
0:05:45 > 0:05:48Maybe he's seen something that could help us work this out.
0:05:48 > 0:05:50Hoo-hoo-hoo-hoo!
0:05:50 > 0:05:52- Excuse me, but... - Hoo-hoo-ha-ha!
0:05:52 > 0:05:54What's so funny? Is my eye patch crooked?
0:05:54 > 0:05:59Something's tickling my blubber, but I can't tell what.
0:05:59 > 0:06:02wish it would stop now. Hoo-hoo-hoo!
0:06:02 > 0:06:05Can you help me? It's down by my tail.
0:06:07 > 0:06:11Ah, we've seen these marks before.
0:06:11 > 0:06:13It's under my chin now!
0:06:15 > 0:06:21- Hmm!- That scurvy tri-toothed terror must be nearby, but where?
0:06:21 > 0:06:25Hoo-hoo! I've got to get out of here!
0:06:25 > 0:06:29- Hold on to me! - OTHERS: Whoa!
0:06:33 > 0:06:36Ha-ha-ha!
0:06:37 > 0:06:39Ooh!
0:06:40 > 0:06:43Whoa! That was a wild ride!
0:06:43 > 0:06:49- I wish I knew who was tickling me. - I think the creature who gave you the giggles
0:06:49 > 0:06:51is the same one giving us trouble.
0:06:51 > 0:06:55It left more of them tiny round marks in your blubber.
0:06:55 > 0:07:00Don't worry. the Octonauts will find the troublemaker and stop him.
0:07:02 > 0:07:09Ah. No, too big. Too small. Too thin. No, no, no. Wait a minute!
0:07:10 > 0:07:13There, that's it.
0:07:13 > 0:07:15'Captain, I know whose teeth these are.'
0:07:15 > 0:07:19- Great work.- 'They're called cookiecutter sharks.
0:07:19 > 0:07:23'They dig their teeth into a whale's blubber and leave round holes,
0:07:23 > 0:07:27'the way a cookiecutter leaves a shape in dough or pastry.'
0:07:27 > 0:07:31They went after the blue whale as they wanted a bite of his blubber.
0:07:31 > 0:07:34Why did the wee sharks attack the Octo-cam cables?
0:07:34 > 0:07:39'They get confused and mistake soft material like rubber for blubber.'
0:07:39 > 0:07:41- Rubber...- ..For blubber!
0:07:41 > 0:07:44We've got to ask them to stop biting our equipment.
0:07:44 > 0:07:48First we need to catch these rubber, blubber lovers
0:07:48 > 0:07:49and I have an idea.
0:07:49 > 0:07:53Barnacles to Tweak. We're going to need your help.
0:07:57 > 0:07:59FISH SCREECH
0:08:02 > 0:08:06Hey, Cap, you ordered a big rubber whale balloon?
0:08:06 > 0:08:12Thanks, Tweak. Let's set it up near the Octo-cam - then everybody hide.
0:08:22 > 0:08:25- KWAZII SNORES - Eh?
0:08:25 > 0:08:27FAINT SQUEAKING
0:08:29 > 0:08:31POP!
0:08:37 > 0:08:38SHARKS: Hey-ho. Go!
0:08:38 > 0:08:42Stop right there, you nasty nibblers!
0:08:44 > 0:08:46SHARKS: Whoa!
0:08:46 > 0:08:47We've got you now.
0:08:47 > 0:08:50Caught us! I'm innocent! I wasn't even there!
0:08:50 > 0:08:53You took bites out of our equipment and broke it.
0:08:53 > 0:08:57Oh, that. Look, we're cookiecutter sharks.
0:08:57 > 0:09:01We thought your equipment was food so we took a nibble. Sorry.
0:09:01 > 0:09:04- Yes, sorry!- Sorry about that. Sorry!
0:09:04 > 0:09:07PESO: But how did you keep hiding from us?
0:09:07 > 0:09:09Uh... Oh...
0:09:09 > 0:09:11Yeow! Clamming up, are you?
0:09:11 > 0:09:14OK, OK, we'll show you how we do it.
0:09:16 > 0:09:20Your bellies glow, so when we're looking at them from below
0:09:20 > 0:09:23they blend in with the sunlight.
0:09:23 > 0:09:25And all you see are those black marks
0:09:25 > 0:09:28that make them look like skinny fish.
0:09:28 > 0:09:31So that's why nobody can see you from below.
0:09:31 > 0:09:35- We can't fool you anymore.- No, absolutely no fooling you at all!
0:09:35 > 0:09:39Why did you leave your teeth in our GUP? Don't you need them?
0:09:39 > 0:09:42Our teeth come out in whole rows like that...
0:09:42 > 0:09:44..And grow back really quickly.
0:09:44 > 0:09:46PESO: What about the teeth that disappeared?
0:09:46 > 0:09:48I put them down and they were gone.
0:09:48 > 0:09:53- The teeth disappeared because I ate them.- You ate your own teeth?
0:09:53 > 0:09:55That doesn't sound healthy.
0:09:55 > 0:09:58It is if you're a cookiecutter shark.
0:09:58 > 0:10:00Our teeth have lots of vitamins in them.
0:10:00 > 0:10:01So the mystery is solved,
0:10:01 > 0:10:05but could you please stop nibbling on our equipment?
0:10:05 > 0:10:09OK, OK, but we'd really like a snack about now.
0:10:09 > 0:10:10Oh, yes. We're really hungry.
0:10:10 > 0:10:13I've got an idea for that.
0:10:16 > 0:10:17Brrp!
0:10:17 > 0:10:19CHOMP
0:10:19 > 0:10:23This fish biscuit is way better than rubber!
0:10:23 > 0:10:25Absolutely!
0:10:25 > 0:10:27He's not wrong!
0:10:27 > 0:10:29CHOMP CHOMP
0:10:29 > 0:10:33See, Tunip, nobody can resist a bite of your fish biscuits.
0:10:33 > 0:10:35GIGGLES
0:10:35 > 0:10:37I'm a bit partial meself!
0:10:37 > 0:10:39You're not the only one!
0:10:39 > 0:10:40Brrrp!
0:10:40 > 0:10:42ALL LAUGH
0:10:42 > 0:10:44Have you got another?
0:10:47 > 0:10:50Subtitles by Shaun Hadnett Red Bee Media Ltd
0:10:50 > 0:10:52E-mail subtitling@bbc.co.uk