0:00:02 > 0:00:05Octonauts, to your stations!
0:00:07 > 0:00:11Barnacles! Kwazii! Peso!
0:00:37 > 0:00:40- Explore!- Rescue!- Protect!
0:00:40 > 0:00:43Octonauts!
0:00:51 > 0:00:52Everyone, keep a lookout.
0:00:52 > 0:00:56Captain, it looks like they're heading our way.
0:00:56 > 0:00:59We should be able to see them any minute now.
0:00:59 > 0:01:02Dashi, sound the Octo alert.
0:01:02 > 0:01:04SIREN WAILS
0:01:04 > 0:01:06Octonauts, to the HQ!
0:01:15 > 0:01:20Octonauts, the eels are on the move. They should be here any minute.
0:01:20 > 0:01:23This only happens once a year, so we don't want to miss it.
0:01:23 > 0:01:25Ah! There they are!
0:01:25 > 0:01:28Eels!
0:01:28 > 0:01:29Ooh!
0:01:29 > 0:01:31Lots and lots of them.
0:01:33 > 0:01:35Let me get a picture.
0:01:36 > 0:01:40Yarr! They're in a big hurry to get somewhere! But where?
0:01:40 > 0:01:43They're on their way from the ocean up the river to the lake.
0:01:43 > 0:01:46It's dangerous. No-one knows how they do it.
0:01:46 > 0:01:50Octonauts, our mission is to follow these eels and find out.
0:01:50 > 0:01:52- Shellington.- Thank you, Captain.
0:01:52 > 0:01:55Every year, a group of young eels
0:01:55 > 0:01:58travels from the ocean where they were born
0:01:58 > 0:02:01up the river to this lake, where they live.
0:02:01 > 0:02:02That looks easy enough.
0:02:02 > 0:02:07Ah, but there's all kinds of dangers on the way, Kwazii.
0:02:07 > 0:02:10Rocks, rough, bumpy water, sudden twists in the river.
0:02:10 > 0:02:13I'd like to try that trip meself!
0:02:13 > 0:02:17And that's why you'll be driving the GUP-A with me on this mission.
0:02:17 > 0:02:19Aye, aye, Captain!
0:02:19 > 0:02:22Kwazii, Peso, Shellington, to the launch bay!
0:02:24 > 0:02:27Come on, mateys! Those slippery eels have a head start,
0:02:27 > 0:02:30- and we've got to catch up. - Open the Octo hatch, Tweak.
0:02:30 > 0:02:33You got it, Cap.
0:02:39 > 0:02:42We've already made it into the river.
0:02:42 > 0:02:45We should catch up with the eels in no time.
0:02:45 > 0:02:48I hope things don't get too bumpy, for us or for them.
0:02:52 > 0:02:57Yarr! Where be those eels?
0:02:58 > 0:03:00Ah, there they are. Let's go.
0:03:04 > 0:03:08No-one's ever followed the eels moving up the river
0:03:08 > 0:03:09this closely before.
0:03:11 > 0:03:15We're going upstream, and the water keeps pushing us back.
0:03:15 > 0:03:19- Kwazii, I'm going to need your help. - Aye, aye, Captain.
0:03:19 > 0:03:21Yow!
0:03:21 > 0:03:23Steer with me. One, two, three!
0:03:23 > 0:03:25BOTH: Aaah!
0:03:33 > 0:03:38- Thanks, Kwazii.- Now let's catch up with those slippery little fellas.
0:03:42 > 0:03:45The eels are swimming fast!
0:03:45 > 0:03:48Aye. But we can go as fast as they can.
0:03:48 > 0:03:50We're gaining on them, Captain.
0:03:56 > 0:04:01Wow. Getting past these rocks is no problem for these eels. Amazing!
0:04:01 > 0:04:04Anywhere they can go, we can go too.
0:04:06 > 0:04:07Yow!
0:04:07 > 0:04:09Woo-hoo!
0:04:19 > 0:04:21- Ha! Turn left!- No, right!
0:04:21 > 0:04:22ALL: Whoa! Aah!
0:04:22 > 0:04:24CRASH
0:04:24 > 0:04:26THEY GASP
0:04:26 > 0:04:29Dashi to Barnacles. Are you all right?
0:04:29 > 0:04:33- We're all right, Dashi. - We're just going for a little spin.
0:04:33 > 0:04:36ALL: Whoa! Aah!
0:04:36 > 0:04:38CRASH
0:04:38 > 0:04:42Oh, no. I hope they're not hurt.
0:04:42 > 0:04:48'Barnacles to the Octopod. We're all OK, but the GUP-A has, erm, well...'
0:04:48 > 0:04:49crashed.
0:04:49 > 0:04:51But how will you keep going?
0:04:51 > 0:04:55- There's no reason we can't swim after 'em, Captain.- Good idea!
0:04:55 > 0:04:58Let's go. Barnacles out.
0:05:01 > 0:05:04Now, where be those eels?
0:05:04 > 0:05:05There they are.
0:05:06 > 0:05:09They really are good climbers.
0:05:09 > 0:05:14Let's find out what's on the other side of those rocks.
0:05:16 > 0:05:18Jumping jellyfish!
0:05:18 > 0:05:21The eels are getting out of the water and moving on land!
0:05:21 > 0:05:23Let's investigate.
0:05:25 > 0:05:30Look at them wriggle right over the mud and dirt!
0:05:30 > 0:05:31That's fascinating!
0:05:31 > 0:05:34Eels can breathe air for a short time,
0:05:34 > 0:05:38so they can leave the water and go over land if they have to.
0:05:38 > 0:05:42Nothing stops them on their way up the river! Nothing! Ooh!
0:05:43 > 0:05:46- STRANGER: Help! - Eh?
0:05:46 > 0:05:48Help!
0:05:48 > 0:05:50Did somebody say something?
0:05:50 > 0:05:52- Help!- Where are you?
0:05:52 > 0:05:53Down 'ere!
0:05:53 > 0:05:56Hello there. Are you stuck?
0:05:56 > 0:05:59Yes. And I really need to get out.
0:05:59 > 0:06:00Hmm.
0:06:03 > 0:06:05Can you grab on to this, matey?
0:06:05 > 0:06:08Yes. Go on, pull me up, and please hurry.
0:06:09 > 0:06:12Did you fall into that hole, little eel?
0:06:12 > 0:06:16Yes. Yes, I did. If there's a hole in the ground,
0:06:16 > 0:06:19I'll be the one eel who falls into it.
0:06:19 > 0:06:22So, thanks very much for getting me out,
0:06:22 > 0:06:24but I really have to be on me way.
0:06:24 > 0:06:28Ow! Ouch! Ooh, me tail hurts! I can't move!
0:06:28 > 0:06:30PESO: Don't worry.
0:06:30 > 0:06:34Don't worry?! Me friends are getting farther away,
0:06:34 > 0:06:37and now me tail's hurt. I can't even wiggle.
0:06:37 > 0:06:41- I'll never catch up to me friends like this.- We can help you.
0:06:41 > 0:06:45- Really?- Of course. We are the Octonauts.
0:06:45 > 0:06:47PESO: What seems to be the trouble?
0:06:47 > 0:06:51It's me tail. It hurts so much I can't move.
0:06:51 > 0:06:53PESO: Ah. You need a bandage.
0:06:56 > 0:07:00That was fast! It feels better already!
0:07:00 > 0:07:03Thanks. - You're welcome.
0:07:03 > 0:07:05And now, I've really got to get going.
0:07:05 > 0:07:08PESO: You need to rest for a while.
0:07:08 > 0:07:11Ooh, I can't rest! Must keep moving!
0:07:11 > 0:07:13Got to catch up to me friends!
0:07:13 > 0:07:18Captain, he's not strong enough to make a long swim up the river.
0:07:18 > 0:07:20I'm afraid he won't make it on his own.
0:07:20 > 0:07:23We'll make sure he's not left behind.
0:07:23 > 0:07:27Ooh! I may need a little help getting back in the water.
0:07:27 > 0:07:30We'll give you more than a little help.
0:07:30 > 0:07:34Aye! We'll take you all the way to the lake!
0:07:34 > 0:07:36Oh, thanks!
0:07:36 > 0:07:40It won't be easy, but we'll swim up the river just like the eels,
0:07:40 > 0:07:42and make sure our friend gets to the lake safely.
0:07:42 > 0:07:45- Aye, aye!- Ready!- Let's go!
0:07:45 > 0:07:49Oh, and one more thing. We'll need the smallest lifebelt we've got!
0:07:52 > 0:07:54Octonauts, let's do this.
0:07:58 > 0:07:59Ah!
0:08:00 > 0:08:05That water's too rough to swim over, and those rocks are too high.
0:08:05 > 0:08:07This will take some teamwork.
0:08:07 > 0:08:11- Think you can get this to the top, Kwazii?- No problem, Captain.
0:08:11 > 0:08:12Aah!
0:08:14 > 0:08:17Yep! Ah!
0:08:19 > 0:08:21Yep! Ah!
0:08:21 > 0:08:24Got it! Grab a hold!
0:08:38 > 0:08:40Ah! Let's go.
0:08:41 > 0:08:43A cave!
0:08:46 > 0:08:47We're going through.
0:08:47 > 0:08:48Ooh!
0:08:56 > 0:08:59We're really, really close now.
0:08:59 > 0:09:01All we have to do is swim through that.
0:09:01 > 0:09:03WATER RUSHES BY
0:09:03 > 0:09:05Yow!
0:09:05 > 0:09:07We have to swim through that?
0:09:07 > 0:09:10But we're almost there, I promise.
0:09:10 > 0:09:12The lake is just on the other side.
0:09:12 > 0:09:14I really have to get there!
0:09:14 > 0:09:17We're going in. Follow me.
0:09:17 > 0:09:19Urgh! Ah!
0:09:22 > 0:09:23Aah!
0:09:27 > 0:09:28Whoa!
0:09:30 > 0:09:32Aah!
0:09:33 > 0:09:36Aah! Ah!
0:09:38 > 0:09:42THEY ALL STRUGGLE
0:09:46 > 0:09:50Oh, we made it! We made it!
0:09:50 > 0:09:53- Everyone OK? - PESO: Just fine.
0:09:53 > 0:09:56The lake is so calm and beautiful.
0:09:56 > 0:09:59Aye. And full of squirmy eels!
0:10:01 > 0:10:04- Where were you?- We lost you. - We were worried.
0:10:04 > 0:10:07These are my friends. Oh, thanks for getting me here.
0:10:07 > 0:10:12Well, you young eels certainly work hard to get where you're going.
0:10:12 > 0:10:14I admire your determination.
0:10:14 > 0:10:15It's what we do.
0:10:15 > 0:10:20And when we're old enough, we'll head back down the river to the ocean
0:10:20 > 0:10:22and have baby eels of our own.
0:10:22 > 0:10:25And when those babies are old enough,
0:10:25 > 0:10:27they'll make their journey up the river.
0:10:27 > 0:10:31Aye! And we'll get to have this adventure all over again,
0:10:31 > 0:10:34crashing the GUP, going through tunnels,
0:10:34 > 0:10:37swimming through rapids and over rocks! Right, Peso?
0:10:37 > 0:10:39Hmm. If you say so.
0:10:39 > 0:10:42THEY ALL LAUGH
0:10:42 > 0:10:43Oh, dear!
0:10:47 > 0:10:50Subtitles by Red Bee Media Ltd
0:10:50 > 0:10:53E-mail subtitling@bbc.co.uk