0:00:00 > 0:00:00- Subtitles
0:00:02 > 0:00:04- Octonots, to your stations.
0:00:06 > 0:00:07- Cwrwgl.
0:00:08 > 0:00:09- Harri.
0:00:09 > 0:00:11- Pegwn.
0:00:37 > 0:00:38- Explore.
0:00:38 > 0:00:39- Rescue.
0:00:39 > 0:00:40- Rescue.- - Protect.
0:00:53 > 0:00:56- Brr. I can't believe we're back - in these chilly waters again.
0:00:56 > 0:00:58- It's all in the name of science.
0:00:59 > 0:01:03- Arctic zone creatures - make some fascinating sounds.
0:01:03 > 0:01:07- With the Octopod's underwater - microphone, we can record them.
0:01:14 > 0:01:16- Ooh, what's making that sound?
0:01:17 > 0:01:19- Oh, just my tummy.
0:01:19 > 0:01:23- I ate some of Gwyddno's kelp cakes - with a bit too much hot sauce.
0:01:24 > 0:01:28- Wait. I'm picking up something else. - Listen.
0:01:32 > 0:01:33- Sounds like walruses to me.
0:01:34 > 0:01:38- The computer will match - the sound to the animal.
0:01:40 > 0:01:44- Ah, walruses. - Now let me guess the next one.
0:01:46 > 0:01:50- 'Tis a strange sound - from a strange creature.
0:01:51 > 0:01:53- This creature could only be the...
0:01:54 > 0:01:55- Herring?
0:01:55 > 0:02:00- Yes. Herring. They talk by blowing - gas bubbles out of their behinds.
0:02:01 > 0:02:03- Out of their behinds?
0:02:05 > 0:02:07- What's that coming from?
0:02:07 > 0:02:10- Sounds like some kind of whale song.
0:02:11 > 0:02:16- It is. Bowhead whales. - They only live here in the Arctic.
0:02:16 > 0:02:19- Their sounds - can't be recorded anywhere else.
0:02:20 > 0:02:22- Look.
0:02:26 > 0:02:28- Howdy, folks.
0:02:28 > 0:02:30- Hello. We're the Octonots.
0:02:30 > 0:02:31- Hello. We're the Octonots.- - Pleased to meet you.
0:02:32 > 0:02:35- That's an enormous head, - even for a whale.
0:02:35 > 0:02:38- The head of a bowhead whale - is as big as a bus.
0:02:38 > 0:02:40- We're not aiming to brag...
0:02:40 > 0:02:44- ..but we have the strongest heads - in the Arctic.
0:02:44 > 0:02:45- How tough?
0:02:46 > 0:02:48- Tough enough to smash - through anything.
0:02:48 > 0:02:49- Yiaow.
0:02:50 > 0:02:54- And we make some pretty - big sounds too. Ready, boys?
0:03:00 > 0:03:03- I'm getting a perfect recording - of them.
0:03:03 > 0:03:05- Bowhead whales sing all the time.
0:03:05 > 0:03:08- While they're travelling, - playing, even eating.
0:03:08 > 0:03:10- It's how they talk to each other.
0:03:10 > 0:03:15- It's nice to make new friends - out here on the Arctic range...
0:03:15 > 0:03:20- ..but now we've got to hit - the trail - it's feeding time.
0:03:22 > 0:03:23- Ta-ta!
0:03:29 > 0:03:31- Yiaow, what's that?
0:03:31 > 0:03:32- More whales?
0:03:34 > 0:03:35- It sounds familiar.
0:03:36 > 0:03:38- Narwhals, Captain.
0:03:38 > 0:03:41- Sounds like a call for help.
0:03:41 > 0:03:43- Then we haven't got a moment - to lose.
0:03:43 > 0:03:45- Harri, Pegwn, to the launch bay.
0:03:54 > 0:03:57- It's coming from inside - that ice tunnel.
0:04:02 > 0:04:07- Shiver me whiskers, Captain. - Look, there's been an avalanche.
0:04:08 > 0:04:12- They must be somewhere behind - all that ice. Ahoy in there.
0:04:13 > 0:04:15- Narwhals, are you alright?
0:04:15 > 0:04:18- Help us, please. We are trapped - in here, we can't get out.
0:04:18 > 0:04:20- I know that voice.
0:04:23 > 0:04:24- Brychfael?
0:04:24 > 0:04:27- Cwrwgl? Is this you?
0:04:27 > 0:04:29- Yes. What happened?
0:04:30 > 0:04:33- Me and my two friends, - we dived down very, very deep.
0:04:33 > 0:04:38- Everything was good until the - ice moved and trapped us in here.
0:04:38 > 0:04:42- The ice, it is too thick - for a narwhal to punch through.
0:04:45 > 0:04:47- We are almost out of air.
0:04:47 > 0:04:49- We need to get you out.
0:04:50 > 0:04:52- Octonots to the HQ.
0:05:01 > 0:05:06- Three narwhals are trapped under the - ice and they're running out of air.
0:05:06 > 0:05:10- Narwhals are whales - and whales breathe air.
0:05:10 > 0:05:13- They can only stay - underwater for a while...
0:05:13 > 0:05:16- ..then they need to - come up to breathe again.
0:05:17 > 0:05:20- We'll get them out, but first, - let's get them some air.
0:05:21 > 0:05:23- We'll run a breathing tube - down there now.
0:05:23 > 0:05:26- Let's do this.
0:05:43 > 0:05:45- I've found an opening for the tube.
0:05:47 > 0:05:52- We're pushing in a breathing tube, - Brychfael. It won't be long now.
0:05:52 > 0:05:55- Please hurry, old friend. - We are feeling very weak.
0:06:01 > 0:06:03- It's caught on something.
0:06:06 > 0:06:07- That did it.
0:06:09 > 0:06:11- There it is.
0:06:13 > 0:06:16- Thank you. Much better.
0:06:17 > 0:06:21- Now that you've got air to breathe, - it's time to break through the ice.
0:06:21 > 0:06:24- Dela, - let's try the sub's icebreaker.
0:06:26 > 0:06:27- Activated.
0:06:33 > 0:06:35- Not even a crack.
0:06:35 > 0:06:36- Not even a crack.- - Let's bring in the drill.
0:06:37 > 0:06:39- We'll need the yellow sub.
0:06:44 > 0:06:49- I'll have 'em out faster than you - can say bunch of munchy carrots.
0:06:49 > 0:06:52- Narwhals, - back away as far as you can.
0:07:01 > 0:07:04- The drill's stuck. - That ice is too thick.
0:07:10 > 0:07:14- I'd better pull out. As soon - as everything stops spinning.
0:07:20 > 0:07:21- Easy does it.
0:07:31 > 0:07:33- Oh, no. The breathing tube.
0:07:35 > 0:07:40- We're back where we started - and we will soon need air again.
0:07:40 > 0:07:45- We're not giving up on you. - Octonots, we tried the subs.
0:07:45 > 0:07:50- We need something to break through - this ice, and we need it now.
0:07:50 > 0:07:52- We could melt the ice - with a blowtorch?
0:07:53 > 0:07:54- It would take too long.
0:08:00 > 0:08:02- Blast it with a sonic slicer?
0:08:02 > 0:08:03- Blast it with a sonic slicer?- - The ice is too thick.
0:08:05 > 0:08:09- I have a pirate cannon under my bed - but I'm out of cannonballs.
0:08:10 > 0:08:12- Whale!
0:08:14 > 0:08:17- That's it. The bowhead whales.
0:08:17 > 0:08:20- Tough enough - to smash through anything.
0:08:22 > 0:08:23- Good thinking.
0:08:23 > 0:08:27- All we have to do is find - our bowhead whale friends.
0:08:27 > 0:08:30- Let's call them - by playing their songs.
0:08:36 > 0:08:39- Try it louder, Dela. - We don't have much time.
0:08:58 > 0:08:59- Super, super.
0:08:59 > 0:09:01- Howdy, y'all.
0:09:01 > 0:09:02- Howdy, y'all.- - We need your help.
0:09:03 > 0:09:05- Narwhals are trapped in the ice.
0:09:06 > 0:09:10- We bowheads are the greatest - icebreakers in the seven seas...
0:09:10 > 0:09:12- ..ain't that right?
0:09:12 > 0:09:15- You ready to take a ride, partner?
0:09:16 > 0:09:18- Captain, help is on the way.
0:09:19 > 0:09:21- Thanks, Dela. How much longer?
0:09:21 > 0:09:23- Look.
0:09:28 > 0:09:31- Brychfael, narwhals, everyone. - Get back.
0:10:01 > 0:10:04- Now that's what I call a ride.
0:10:08 > 0:10:11- Captain Cwrwgl, my dear old friend.
0:10:11 > 0:10:15- Thanks to you and your crew - for saving us.
0:10:15 > 0:10:19- And you too, - our mighty bowhead whale friends.
0:10:19 > 0:10:25- No problems. It was nothing. Always - glad to help a fellow whale in need.
0:10:25 > 0:10:30- It's amazing what you can do - when you put your heads together.
0:10:32 > 0:10:35- Especially when you've got - heads this big.
0:10:36 > 0:10:39- Happy trails, partners.
0:10:42 > 0:10:43- Thanks for the ride.
0:10:58 > 0:10:58- .