0:00:00 > 0:00:00- 888
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 Navigation Lesson
0:00:37 > 0:00:39- Yippee.
0:00:42 > 0:00:44- Thanks, Beth. - Thanks for your applause.
0:00:46 > 0:00:50- The needle's pointing that way. - It always points north.
0:00:50 > 0:00:52- Did you see that?
0:00:52 > 0:00:55- I'm working - on the navigation lesson we had.
0:00:56 > 0:00:57- You should, too.
0:00:57 > 0:00:59- I will, later.
0:01:00 > 0:01:02- Let's play spinning around.
0:01:04 > 0:01:09- No, thanks. Dyf will be testing us - later. I'm getting ready.
0:01:09 > 0:01:11- Come on, only once.
0:01:18 > 0:01:20- Beth, where are you?
0:01:22 > 0:01:23- You're up there.
0:01:26 > 0:01:29- Oli, I'm trying to concentrate.
0:01:29 > 0:01:32- The sextant can locate - star constellations.
0:01:32 > 0:01:34- You know how to use that?
0:01:34 > 0:01:39- The sextant measures width - and the chronometer measures length.
0:01:39 > 0:01:42- Together, they can locate anything.
0:01:42 > 0:01:45- I use a different system for that.
0:01:46 > 0:01:50- I know this place like the back - of my hand. We've been here before.
0:01:51 > 0:01:55- With this navigation tool, - you can be more precise.
0:01:56 > 0:02:00- I don't need a tool. - I was born to navigate.
0:02:00 > 0:02:02- Hello, students.
0:02:02 > 0:02:05- Come home. - I have a surprise for you.
0:02:05 > 0:02:06- On our way.
0:02:07 > 0:02:08- Dive, Oli, dive.
0:02:10 > 0:02:12- It's a map.
0:02:12 > 0:02:14- It's a map.- - But no ordinary map.
0:02:14 > 0:02:16- A treasure map.
0:02:16 > 0:02:19- A treasure map. - Can I go on the treasure hunt?
0:02:20 > 0:02:23- Sorry, Sid. It's a device - for improving navigation.
0:02:24 > 0:02:27- Unfair. I never do anything fun.
0:02:28 > 0:02:32- This won't be any fun. I'm switching - off every navigation computer.
0:02:33 > 0:02:38- You'll have to use your brains - to navigate and find four flags.
0:02:38 > 0:02:41- Every flag will point you - to the next.
0:02:41 > 0:02:46- The final one will show you - where the treasure is buried.
0:02:48 > 0:02:49- I'll find it first.
0:02:50 > 0:02:52- No, you haven't practised.
0:02:53 > 0:02:56- I've downloaded the map - to your data screen. Good luck.
0:02:57 > 0:03:02- According to this, the first banner - is 12 degrees 20 minutes south...
0:03:02 > 0:03:05- ..and 40 degrees 5 minutes - to the east.
0:03:05 > 0:03:07- I'm off.
0:03:08 > 0:03:10- Uh...
0:03:10 > 0:03:12- Something wrong, Oli.
0:03:12 > 0:03:16- No, I'm fine. I'm on my way.
0:03:16 > 0:03:19- Thankfully, - I have natural direction.
0:03:23 > 0:03:27- Here it is. That was easy. - Where's the next one?
0:03:29 > 0:03:31- I have a good idea.
0:03:32 > 0:03:34- I'll check the sextant first.
0:03:37 > 0:03:39- The flag must be here somewhere.
0:03:41 > 0:03:43- Here it is.
0:03:43 > 0:03:46- Hey! Come on, silly flag.
0:03:51 > 0:03:52- You're not a flag.
0:03:53 > 0:03:54- You're an eel.
0:03:54 > 0:03:56- Whoa!
0:03:56 > 0:03:58- Sorry. Mistake.
0:04:00 > 0:04:02- Let's go.
0:04:14 > 0:04:16- The second flag.
0:04:20 > 0:04:22- Now for the third.
0:04:23 > 0:04:24- This is fun.
0:04:27 > 0:04:31- I don't understand this map. - Do I go north or east?
0:04:33 > 0:04:37- If I go east, the flag should be...
0:04:38 > 0:04:40- ..here.
0:04:40 > 0:04:42- Or not.
0:04:46 > 0:04:48- Argh!
0:04:48 > 0:04:50- Argh!
0:04:55 > 0:04:58- The third flag is right under me.
0:04:59 > 0:05:01- I wonder how Oli's getting on?
0:05:04 > 0:05:06- It must be here somewhere.
0:05:12 > 0:05:14- Under the mud, maybe.
0:05:16 > 0:05:18- Yuck.
0:05:21 > 0:05:23- This is disgusting.
0:05:23 > 0:05:25- I can feel something.
0:05:26 > 0:05:30- Yes, this. It must be the flag.
0:05:32 > 0:05:34- Oops, sorry.
0:05:36 > 0:05:38- Stop. Go away.
0:05:39 > 0:05:41- Hey, leave me alone.
0:05:47 > 0:05:50- Crazy crabs! - I'm off to clean myself up.
0:05:56 > 0:05:57- Wow.
0:05:57 > 0:06:00- Is that the last flag?
0:06:02 > 0:06:04- Yes. Here's the treasure.
0:06:05 > 0:06:07- I knew I'd find it.
0:06:10 > 0:06:14- I know these seas - like the back of my fin.
0:06:17 > 0:06:19- BEEPING
0:06:20 > 0:06:22- Oli, are you there?
0:06:22 > 0:06:24- Dyf? The treasure!
0:06:25 > 0:06:28- Emergency. A pipe has burst. - It's poisoning the sea.
0:06:29 > 0:06:30- Hurry.
0:06:31 > 0:06:33- OK. I'll get Beth.
0:06:33 > 0:06:35- Beth's on her way.
0:06:35 > 0:06:38- Where's the cliff? - I've never been there.
0:06:39 > 0:06:41- I'm sending you the details.
0:06:41 > 0:06:45- Follow the instructions - just like I taught you.
0:06:45 > 0:06:48- This is important. Over and out.
0:06:48 > 0:06:53- The details are on the screen. - This is going to be difficult.
0:07:02 > 0:07:06- Something looks odd. - Did Dyf send the wrong map?
0:07:12 > 0:07:14- Why didn't I listen to Beth?
0:07:16 > 0:07:18- Great!
0:07:25 > 0:07:27- I can't find my way out.
0:07:32 > 0:07:33- That's the way.
0:07:38 > 0:07:39- Warden!
0:07:39 > 0:07:41- Hello, my friend.
0:07:42 > 0:07:44- What are you doing here?
0:07:44 > 0:07:47- What are you doing here?- - I was on my way to the cliff...
0:07:47 > 0:07:51- You're going the wrong way. - It's that way.
0:07:51 > 0:07:52- Thanks!
0:07:59 > 0:08:00- It won't budge.
0:08:00 > 0:08:02- We need Oli.
0:08:02 > 0:08:04- Where is he?
0:08:05 > 0:08:06- I'll call him.
0:08:11 > 0:08:13- I don't think this is the cliff.
0:08:14 > 0:08:16- BEEPING
0:08:16 > 0:08:18- Oli, where are you?
0:08:18 > 0:08:21- We need the drill. Hurry.
0:08:21 > 0:08:22- Wait, don't go.
0:08:23 > 0:08:24- What's wrong?
0:08:25 > 0:08:27- I can't find the cliff.
0:08:27 > 0:08:30- Dyf sent you the details.
0:08:31 > 0:08:34- I know, but I don't understand them.
0:08:34 > 0:08:39- I can't use the sextant - or the chronometer.
0:08:39 > 0:08:42- You should have practised.
0:08:42 > 0:08:44- I know, but I didn't.
0:08:44 > 0:08:47- I'm in the smoking field now.
0:08:48 > 0:08:51- Here's what you have to do.
0:08:53 > 0:08:55- Straight on.
0:08:55 > 0:08:57- North?
0:08:57 > 0:09:01- At least you know - how to use a compass.
0:09:02 > 0:09:04- You're almost here.
0:09:10 > 0:09:11- Finally.
0:09:11 > 0:09:13- Better late than never.
0:09:13 > 0:09:15- Better late than never.- - Thank goodness you're here.
0:09:15 > 0:09:16- Break the rock.
0:09:17 > 0:09:19- At your service.
0:09:34 > 0:09:36- It's done.
0:09:36 > 0:09:37- Well done, Oli.
0:09:37 > 0:09:38- Well done, Oli.- - Let's fix the pipe.
0:09:48 > 0:09:50- Hooray!
0:09:50 > 0:09:51- Well done.
0:09:52 > 0:09:54- Why did it take you so long - to get here?
0:09:54 > 0:10:00- It was touch and go. - We only just avoided a disaster.
0:10:01 > 0:10:04- Thank goodness everyone is safe.
0:10:04 > 0:10:08- Thank goodness everyone is safe.- - I'll stay here just in case.
0:10:08 > 0:10:12- Good idea. - I'll see you back at the station.
0:10:14 > 0:10:17- Thank you for not telling Dyf - I was lost.
0:10:17 > 0:10:19- No problems.
0:10:19 > 0:10:21- You deserve this.
0:10:21 > 0:10:23- What is it?
0:10:23 > 0:10:26- The treasure hunt prize.
0:10:26 > 0:10:29- You would have found it before me.
0:10:29 > 0:10:33- You found it? On your own?
0:10:33 > 0:10:36- Yes, Beth.
0:10:36 > 0:10:38- I'm not a great navigator...
0:10:38 > 0:10:41- ..but I'm really lucky!
0:10:42 > 0:10:46- Can you find your way home, - Mr Lucky?
0:10:46 > 0:10:48- With my eyes closed.
0:10:48 > 0:10:50- Let's have a race!
0:10:50 > 0:10:53- Beth, wait for me.
0:10:53 > 0:10:57- It'll be easy to navigate back - to HQ. Follow my bubbles.
0:11:26 > 0:11:26- .