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0:00:02 > 0:00:05- # There's plenty of adventure - in the sea
0:00:05 > 0:00:07- # Oli and Beth, friends are we
0:00:07 > 0:00:10- # Playing in the sea, - lessons one, two and three
0:00:10 > 0:00:14- # Swimming around, - fun for you and me
0:00:15 > 0:00:17- # Oli Dan y Don
0:00:18 > 0:00:20- # Oli Dan y Don
0:00:20 > 0:00:23- # Searching in the sea, - it's so exciting as you can see
0:00:24 > 0:00:26- # Under the sea, under the sea #
0:00:30 > 0:00:32- The Giant Sea-Snake
0:00:39 > 0:00:41- Wow, this is cool.
0:00:41 > 0:00:44- Would you like a race, Beth?
0:00:44 > 0:00:46- I won't use my turbo.
0:00:46 > 0:00:51- No, thanks, I'm looking - at this coral. It's so pret...
0:00:51 > 0:00:52- Argh!
0:00:57 > 0:00:59- Dear me! Are you two alright?
0:00:59 > 0:01:02- My engine almost stopped.
0:01:03 > 0:01:05- Don't worry, we're OK.
0:01:05 > 0:01:08- I'm sure you are. - What about the coral reef?
0:01:08 > 0:01:11- You almost knocked it over.
0:01:11 > 0:01:13- Sorry.
0:01:13 > 0:01:14- It's only a pile of stones.
0:01:14 > 0:01:16- It's only a pile of stones.- - That pile of stones...
0:01:17 > 0:01:19- ..are the remains of little animals.
0:01:19 > 0:01:20- ..are the remains of little animals.- - Really? Cool.
0:01:20 > 0:01:25- It looks like a hard rock - but it's very fragile.
0:01:25 > 0:01:28- I'm sorry. - I promise to be more careful.
0:01:29 > 0:01:31- OK then. - I have a special job for you two.
0:01:32 > 0:01:33- Clean the reef.
0:01:34 > 0:01:36- Collecting rubbish?
0:01:41 > 0:01:43- I hate collecting rubbish.
0:01:43 > 0:01:45- Me, too, but someone has to do it.
0:01:48 > 0:01:50- Beth, Oli.
0:01:51 > 0:01:53- We're ready for our next task, Dyf.
0:01:54 > 0:01:56- You're working very hard.
0:01:56 > 0:01:59- I want one of you - to check the new gauges.
0:02:00 > 0:02:05- I'm the one. With my new turbo, - no-one's faster than me.
0:02:05 > 0:02:08- I want to go very fast.
0:02:08 > 0:02:12- Are you sure you're OK - with that turbo?
0:02:12 > 0:02:14- I'm fine. I'm a quick learner.
0:02:14 > 0:02:17- D'you see? A quick learner.
0:02:17 > 0:02:20- OK, Oli, the job is yours.
0:02:20 > 0:02:24- The job's mine. The job's mi...
0:02:24 > 0:02:30- It's not fair. I have to collect - all the rubbish on my own.
0:02:31 > 0:02:33- Someone has to do it.
0:02:41 > 0:02:43- Yippee!
0:02:49 > 0:02:51- Yahoo! We-hey!
0:02:53 > 0:02:55- Ah-hah, he-hey!
0:02:57 > 0:03:00- Whoaaaah-hah!
0:03:04 > 0:03:06- Oh, no, what have I done?
0:03:09 > 0:03:10- I broke the coral.
0:03:11 > 0:03:15- Everything will be OK. Don't worry. - I didn't mean to hurt you.
0:03:16 > 0:03:18- I'll put you back together.
0:03:19 > 0:03:21- No worries.
0:03:22 > 0:03:24- There you go. Like new.
0:03:24 > 0:03:27- I'll go and check the gauges - for Dyf.
0:03:33 > 0:03:35- Hiya, Beth, want some help?
0:03:35 > 0:03:38- Thank you, sir. - Very glad to have your help.
0:03:40 > 0:03:43- I'm sorry for leaving you - to do the hard work.
0:03:44 > 0:03:48- Oli, are you alright? - You're being very kind to me.
0:03:48 > 0:03:51- Well, uh, I had an accident.
0:03:51 > 0:03:53- Accident? Are you OK?
0:03:53 > 0:03:57- Yes, I'm OK, - but I collided with some coral.
0:03:57 > 0:03:59- I broke it.
0:03:59 > 0:04:02- Oh, no. Have you told Wena?
0:04:02 > 0:04:03- No.
0:04:03 > 0:04:05- No.- - Oli, you must report it.
0:04:06 > 0:04:07- I know I should report it.
0:04:07 > 0:04:11- I know I should report it.- - Wena's bound to find out.
0:04:12 > 0:04:13- Report what?
0:04:13 > 0:04:15- Report what?- - Sid!
0:04:15 > 0:04:17- Report to who? - What do you want to say?
0:04:18 > 0:04:22- Tell the truth - or I'll split you in two.
0:04:24 > 0:04:26- Boo!
0:04:26 > 0:04:30- Come on, boys, tell me, - what's happened?
0:04:33 > 0:04:34- Whoa!
0:04:34 > 0:04:35- What's that?
0:04:36 > 0:04:38- I don't know, but it's big.
0:04:38 > 0:04:40- It's huge.
0:04:41 > 0:04:43- It's a sea-snake.
0:04:43 > 0:04:47- A sea-snake? Let's get out of here!
0:04:47 > 0:04:49- It'll eat you alive.
0:04:53 > 0:04:55- Oli, what do you think it is?
0:04:55 > 0:04:58- I think it's a boat, Beth.
0:04:58 > 0:05:01- I've never seen one - moving like that.
0:05:03 > 0:05:07- Beth, Oli, meet me at Coral No.2.
0:05:13 > 0:05:15- Dear me, this has really upset me.
0:05:15 > 0:05:17- Look at these coral pieces.
0:05:18 > 0:05:20- Do you know what happened?
0:05:20 > 0:05:24- Uh, well... yes. I know.
0:05:25 > 0:05:27- That sea-snake broke it.
0:05:28 > 0:05:29- A sea-snake?
0:05:29 > 0:05:33- I saw it. We all saw it.
0:05:33 > 0:05:36- It was huge, wasn't it?
0:05:36 > 0:05:38- Yes, we saw something.
0:05:38 > 0:05:43- It was frighteningly big. - The sea-snake broke the coral.
0:05:43 > 0:05:45- It wasn't the sea-snake.
0:05:45 > 0:05:48- It wasn't the sea-snake.- - I'm telling you. A giant sea-snake.
0:05:48 > 0:05:53- Slow down, Sid. There's no - such thing as a giant sea-snake.
0:05:53 > 0:05:57- This was done - by something or someone else.
0:05:57 > 0:06:00- When I find out - who made this mess...
0:06:00 > 0:06:03- ..I'll sort them out, I promise you.
0:06:06 > 0:06:09- You should have told her.
0:06:09 > 0:06:16- I tried my best but Sid was talking - about the giant sea-snake.
0:06:16 > 0:06:18- I couldn't tell her after that.
0:06:19 > 0:06:23- If she finds out, she'll never - forgive me and I'll be sent home.
0:06:23 > 0:06:28- If there was a giant sea-snake, - everything would be easier.
0:06:28 > 0:06:29- I wouldn't be thrown out.
0:06:29 > 0:06:31- I wouldn't be thrown out.- - They don't believe in sea-snakes.
0:06:31 > 0:06:35- They'd have to see it to believe it.
0:06:38 > 0:06:41- Beth, you're so amazing.
0:06:41 > 0:06:42- Am I?
0:06:42 > 0:06:46- If Wena wants to see it, - that's what needs to happen.
0:06:46 > 0:06:48- Come on.
0:07:06 > 0:07:09- Beth, those little fish - were scared of us.
0:07:09 > 0:07:12- Of course they were. - We're a sea-snake.
0:07:12 > 0:07:14- Pah!
0:07:23 > 0:07:24- Ow!
0:07:24 > 0:07:26- BEEPING
0:07:26 > 0:07:28- Don't answer it.
0:07:29 > 0:07:31- Beth, are you there?
0:07:31 > 0:07:33- Oli?
0:07:33 > 0:07:35- Oli?- - We're busy on the seafloor.
0:07:35 > 0:07:38- I want you to return - to the underwater centre.
0:07:39 > 0:07:43- There's a strange beast in the area - scaring the fish.
0:07:43 > 0:07:46- Until I identify it, - I want you all to come inside.
0:07:47 > 0:07:49- End of message.
0:07:49 > 0:07:51- We have to go back.
0:07:51 > 0:07:55- No, we don't. - I'm going to tell Wena.
0:07:55 > 0:07:58- Then Dyf will send me home.
0:07:59 > 0:07:59- But...
0:07:59 > 0:08:03- But...- - I should have been honest - from the start.
0:08:03 > 0:08:05- Off we go.
0:08:07 > 0:08:09- Argh! The beast!
0:08:12 > 0:08:15- Beth, I'll attract its attention - and you can escape.
0:08:16 > 0:08:18- Do it.
0:08:21 > 0:08:24- Yoo-hoo. Over here.
0:08:26 > 0:08:29- Can't catch me. Can't catch me.
0:08:30 > 0:08:31- Can't catch me.
0:08:35 > 0:08:37- Hurry up.
0:08:43 > 0:08:46- Oli, dive now - and switch off your engine.
0:08:52 > 0:08:54- Look at this. Fetch!
0:08:59 > 0:09:02- Hooray! Are you OK, Oli?
0:09:02 > 0:09:03- Hooray! Are you OK, Oli?- - Are you hurt?
0:09:03 > 0:09:06- I'm fine. Really. I'm OK.
0:09:06 > 0:09:08- What about the beast?
0:09:09 > 0:09:13- There's no such thing - as a giant sea-snake.
0:09:13 > 0:09:17- That's a whale shark - and it won't harm anyone.
0:09:17 > 0:09:21- They're usually found - in warmer waters.
0:09:21 > 0:09:25- Look at him swimming happily - in the warm bubbles.
0:09:25 > 0:09:30- He followed you because the turbo - heated the water around you.
0:09:30 > 0:09:31- Amazing.
0:09:32 > 0:09:34- Wena, d'you know that new turbo?
0:09:34 > 0:09:37- I think I need some more lessons.
0:09:38 > 0:09:39- What do you mean?
0:09:40 > 0:09:43- Well... - I was going too fast this morning.
0:09:43 > 0:09:46- I didn't see the coral reef in time.
0:09:47 > 0:09:50- And, uh... - I collided with the coral.
0:09:50 > 0:09:52- You did it?
0:09:53 > 0:09:54- I thought so.
0:09:55 > 0:09:58- I wanted to see how long - it would take for you to confess.
0:09:59 > 0:10:02- I'm sorry, I really am sorry.
0:10:03 > 0:10:06- If you send me home, - I'll understand.
0:10:06 > 0:10:11- Yes, well, you deserve - to be sent home, doesn't he, Dyf?
0:10:11 > 0:10:13- You're right.
0:10:16 > 0:10:18- Mind you, Oli was very brave today.
0:10:18 > 0:10:22- He didn't know the shark - was harmless.
0:10:22 > 0:10:25- He risked his life to save Beth...
0:10:27 > 0:10:31- ..but for shame on you - for breaking the coral.
0:10:31 > 0:10:34- I'm sure you'll be - more careful from now on.
0:10:34 > 0:10:36- I promise.
0:10:36 > 0:10:38- I promise.- - Right now, go as fast as you can...
0:10:39 > 0:10:44- ..to create some warm bubbles to - lead the shark back to warmer water.
0:10:44 > 0:10:46- OK, sir. Off I go.
0:10:48 > 0:10:50- D'you know what?
0:10:50 > 0:10:55- Oli will be a great underwater - research submarine one day.
0:11:22 > 0:11:23- .