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.
0:00:54 > 0:00:56- The kelp forest is right up ahead.
0:00:57 > 0:01:01- Let's hurry, Cregynog has someone - special he wants us to meet.
0:01:02 > 0:01:04- Ah, can't you just tell us - who it is?
0:01:05 > 0:01:06- No, it's a surprise.
0:01:07 > 0:01:10- Is it someone - you've known for a long time?
0:01:11 > 0:01:13- I've never met him before.
0:01:13 > 0:01:16- Is it... - some kind of slimy kelp monster?
0:01:17 > 0:01:18- No.
0:01:18 > 0:01:20- Is it...?
0:01:20 > 0:01:23- A bunch of kelp - heading straight for us!
0:01:27 > 0:01:30- The water's full of kelp!
0:01:30 > 0:01:33- It's all coming - from the kelp forest.
0:01:33 > 0:01:35- Something's not right.
0:01:35 > 0:01:38- We'd better take a look.
0:01:40 > 0:01:44- Kelp strands are connected - to the sea floor by these roots.
0:01:44 > 0:01:47- If the roots come loose, - the kelp float away.
0:01:47 > 0:01:51- If too much kelp floats away - there'll be no more kelp forest.
0:01:51 > 0:01:54- And all these creatures - will have nowhere to live!
0:01:55 > 0:02:00- But what's causing all the kelp - to come loose in the first place?
0:02:00 > 0:02:01- Look, mateys.
0:02:01 > 0:02:04- I was afraid of this. Red urchins!
0:02:04 > 0:02:08- Red urchins destroy kelp roots.
0:02:09 > 0:02:12- They can wipe out - an entire kelp forest.
0:02:12 > 0:02:14- Unless there are sea otters...
0:02:16 > 0:02:17- ..around to eat them.
0:02:18 > 0:02:19- Alaw!
0:02:19 > 0:02:20- Alaw!- - Hello, Cregynog.
0:02:20 > 0:02:21- Alaw!
0:02:21 > 0:02:25- Everybody, this is my sister, Alaw, - the sea otter.
0:02:25 > 0:02:27- Oh! Hiya.
0:02:28 > 0:02:30- Alaw is a scientist just like me.
0:02:30 > 0:02:34- She knows everything about - kelp forests and kelp plants.
0:02:34 > 0:02:38- Actually, kelp isn't a plant at all, - it's a type of algae.
0:02:38 > 0:02:39- See?
0:02:39 > 0:02:42- This is who you wanted us to meet.
0:02:42 > 0:02:47- Not exactly, but Alaw can tell us - what's wrong with the kelp forest.
0:02:48 > 0:02:52- Yes. I'm afraid I've fallen - behind on my urchin duties.
0:02:52 > 0:02:53- Urchin duties?
0:02:54 > 0:02:57- Yes, us sea otters are - what's known as a keystone species.
0:02:58 > 0:03:00- Kelp forests depends on us...
0:03:00 > 0:03:02- ..to eat red urchins - so they don't destroy it.
0:03:03 > 0:03:05- It's our duty as sea otters.
0:03:05 > 0:03:08- I've never seen you eat an urchin.
0:03:08 > 0:03:13- Ah... well, actually, as it turns - out, I'm allergic to urchins.
0:03:13 > 0:03:18- Cregynog helps the kelp forest - in a different way, as an Octonot.
0:03:18 > 0:03:22- Usually, I keep the urchins - under control all by myself...
0:03:22 > 0:03:24- ..but I've been kind of busy.
0:03:25 > 0:03:28- Well, let me show you.
0:03:31 > 0:03:32- He's right over here.
0:03:33 > 0:03:35- I wrapped him in kelp - so he wouldn't drift away.
0:03:36 > 0:03:39- Everybody, this is Peris.
0:03:41 > 0:03:43- This is who I wanted you - all to meet.
0:03:44 > 0:03:46- My new nephew!
0:03:48 > 0:03:50- Look how fuzzy he is!
0:03:50 > 0:03:53- I spend most of my time - feeding him...
0:03:53 > 0:03:56- ..cleaning him and teaching him - how to find food.
0:03:56 > 0:04:01- Once Peris is older, he'll be able - to dive down to eat red urchins too.
0:04:01 > 0:04:06- As a matter of fact, it's about time - for Peris's first diving lesson.
0:04:06 > 0:04:09- Oh, but I still have to catch up - on my urchin duties.
0:04:09 > 0:04:13- Why don't you and Cregynog - give Peris his diving lesson...
0:04:13 > 0:04:16- ..and let us clear the urchins - out of the kelp forest?
0:04:17 > 0:04:19- Oh! That would be wonderful!
0:04:19 > 0:04:22- Let's do this!
0:04:24 > 0:04:26- We eat red urchins like this.
0:04:27 > 0:04:29- Now you try.
0:04:32 > 0:04:35- Oh, no, sweetie, that's a rock.
0:04:45 > 0:04:47- Hup! Hup!
0:05:02 > 0:05:05- Cwrwgl to Cregynog, - how's the diving lesson going?
0:05:05 > 0:05:10- Well, Peris found three red rocks, - two red shells...
0:05:10 > 0:05:14- ..one grumpy red crab, - but no red urchins!
0:05:14 > 0:05:15- How about you?
0:05:15 > 0:05:20- We managed to clear the red urchins - out of the kelp forest.
0:05:20 > 0:05:25- That should keep them under control, - at least until it gets dark.
0:05:25 > 0:05:28- Red urchins - are most active at night.
0:05:28 > 0:05:31- They might try to come back - when the sun goes down.
0:05:31 > 0:05:36- We'd better stay the night. We'll - take turns looking out for urchins.
0:05:41 > 0:05:44- You're sure you'll be OK up there, - Cregynog?
0:05:44 > 0:05:47- Of course, Captain.
0:05:47 > 0:05:51- Nothing like sleeping out - under the stars, sea-otter style.
0:05:52 > 0:05:57- Ah! We're holding hands and - holding on to kelp, so we don't...
0:05:57 > 0:05:58- ..float away.
0:06:08 > 0:06:10- Still no sign of any urchins.
0:06:10 > 0:06:11- RUSTLING
0:06:15 > 0:06:16- Hello?
0:06:18 > 0:06:20- Can't a guy have dinner in peace?
0:06:21 > 0:06:24- Oh, excuse me, I thought you were...
0:06:26 > 0:06:27- Urchins!
0:06:28 > 0:06:33- Oh, no! That's the strand of kelp - Cregynog's holding on to!
0:06:34 > 0:06:39- Cregynog! Come in, Cregynog. - Your kelp strand is loose!
0:06:40 > 0:06:44- I just want to sleep. - Just a few minutes more, Mam.
0:06:48 > 0:06:51- Flapperty flippers!
0:06:52 > 0:06:55- Captain! Come in, Captain!
0:06:55 > 0:06:59- The urchins are coming. The urchins - are coming! Lots of them!
0:07:00 > 0:07:03- Harri! Sound the Octo-alert!
0:07:04 > 0:07:06- Octonots to the sub.
0:07:15 > 0:07:20- The urchins are heading for the kelp - forest and we've got to stop them.
0:07:20 > 0:07:24- Everyone, let's... - Oh, hang on, where's Cregynog?
0:07:25 > 0:07:29- The urchins destroyed the roots - of the kelp he was holding on to.
0:07:29 > 0:07:33- Look! Cregynog, Alaw and Peris - are drifting out to sea.
0:07:34 > 0:07:37- You take the sub to rescue Cregynog.
0:07:37 > 0:07:41- We'll help Pegwn with the urchins.
0:07:41 > 0:07:43- There's no time to lose.
0:07:43 > 0:07:46- Everyone, into positions.
0:07:54 > 0:07:57- Harri, Dela, - any sign of Cregynog and Alaw?
0:07:58 > 0:08:00- We're approaching them now.
0:08:00 > 0:08:03- Hurry, we need all the help - we can get.
0:08:05 > 0:08:08- There they are, matey!
0:08:17 > 0:08:21- If we get too close, we'll crash - into them. Maybe you could...
0:08:22 > 0:08:24- Reel 'em in? Already on it.
0:08:26 > 0:08:28- Almost! Almost!
0:08:32 > 0:08:33- Got 'em!
0:08:39 > 0:08:42- Cregynog! Alaw! Wake up!
0:08:42 > 0:08:45- What? Jumping jellyfish!
0:08:46 > 0:08:49- Cregynog, the kelp! Grab the kelp!
0:08:53 > 0:08:54- Hold on tight, mateys!
0:08:58 > 0:09:01- We've got to get back - to the kelp forest.
0:09:04 > 0:09:08- It's no use, Cap, the urchins - are already getting through.
0:09:09 > 0:09:13- This looks like a job - for a keystone species!
0:09:13 > 0:09:14- Cregynog!
0:09:16 > 0:09:19- The urchins will keep coming back...
0:09:19 > 0:09:23- ..unless we move them somewhere - with plenty of food.
0:09:23 > 0:09:27- That rocky reef! There's plenty - of algae for them to eat.
0:09:27 > 0:09:31- What about the urchins - already in the kelp forest?
0:09:31 > 0:09:33- Alaw, I hope you're hungry.
0:09:33 > 0:09:35- Reporting for urchin duty!
0:09:40 > 0:09:45- Alright, Octonots, start moving - the urchins to the rocky reef.
0:09:59 > 0:10:03- It's working, - the urchins like it here!
0:10:03 > 0:10:04- Keep it up.
0:10:11 > 0:10:13- That's the last one, Cap.
0:10:13 > 0:10:16- Thanks. Good work, everyone.
0:10:16 > 0:10:19- The red urchins are gone - and the kelp forest is safe.
0:10:20 > 0:10:21- Thanks, Octonots!
0:10:21 > 0:10:25- I don't know what I would - have done without all your help.
0:10:25 > 0:10:26- Oops! Missed one!
0:10:31 > 0:10:33- Peris! You did it!
0:10:33 > 0:10:35- Your first red urchin!
0:10:36 > 0:10:40- It looks like you'll have some help - with your urchin duties now.
0:10:58 > 0:10:58- .