CHRIS: We'’’re here on the North Atlantic Coast of North America, in the intertidal zone.

Hey, it'’’s us, the Kratt Brothers.

I'’’m Chris.

I'’’m Martin.

And this rocky intertidal habitat around us is one of the harshest wildlife habitats on Earth, with the crashing waves one minute.

CHRIS: And scorching sun the next.

MARTIN: Underwater sometimes.

CHRIS: Dry at others.

That'’’s because tides change.

It'’’s high tide now.

And water covers most of the rock and sand.

But, six hours later, the same exact habitat looks like this.

Now it'’’s low tide.

And the intertidal zone is dry and exposed.

Low tide is the best time to meet those amazing creatures that live in this zone between the high and the low tide marks.

These are mussels, an animal with two shells that fastens onto rocks and filter feeds microalgae.

This rock is covered with barnacles, little animals hiding under a protective shell that catch zooplankton out of the water.

A little young lobster: Lobster will sometimes take refuge in tide pools like this one.

Tide pools are little pockets of water that hold water throughout the entire low tide cycle.

Periwinkles: a type of snail that grazes on algae!

Ah, dog whelks: another type of snail.

But this one is a predator snail that eats other shellfish.

All these animals have amazing ways to survive in this harsh environment.

Imagine if we had the creature powers of the animals of the intertidal.

What if?

What if?

♪ On adventure with the coolest creatures ♪ ♪ From the oceans to the trees ♪ ♪ The Brothers Kratt are going places you never get to see ♪ ♪ Hanging with their creature friends ♪ ♪ Get ready, it'’’s the hour ♪ ♪ We'’’re gonna save some animals today with ♪ ♪ Creature Power ♪ ♪ Gonna go wild, Wild Kratts ♪ ♪ Gonna go wild, wild, Wild Kratts ♪ ♪ Gonna go wild, Wild Kratts ♪ ♪ Gonna go wild, wild, wild ♪ ♪ Cheetah speed and lizard glide ♪ ♪ Falcon flight and lion pride ♪ ♪ Gonna go wild, Wild Kratts ♪ ♪ Gonna go wild, wild, Wild Kratts ♪ ♪ Gonna go wild, Wild Kratts ♪ ♪ Gonna go wild, wild, Wild Kratts ♪ ♪ Go wild, wild, Wild Kratts ♪ CHRIS: Keep your eyes peeled for creature souvenirs.

That'’’s why I love checking out the coastline.

There are always cool things washing in with the waves.

I found another one of these shells.

Awesome, Sani: Add that to your collection.

What else is out here?

We got to find something really special.

There!

There!

It'’’s mine!

I got it!

I had it first!

No way, I did!

I did!

Not yours, it'’’s mine.

Let go of my shell, Bro.

Easy, easy!

Zip it, guys.

They both really want that shell.

I think I know how to settle this one.

Okay, listen up.

That shell is the perfect prize for a new creature challenge I'’’ve been working on for you guys.

Whoever lasts at least 12 hours in one of the harshest creature habitats on Earth wins.

Wait.

What do you mean by "Lasts"?

What do you mean by "Harshest creature habitats"?

You'’’ve got to make it as one of the creatures in the intertidal zone.

The place has crashing waves.

It'’’s underwater part of the time, exposed to dry land other times.

The intertidal is the habitat between high tide, when the water is up, and low tide, when it'’’s down.

I love the ocean.

But if I were a creature, I would not want to live there.

Okay, guys, I gave you a couple brand new Creature Power Discs that might come in handy.

Cool!

And, if you need it, I'’’ll even make each of you one more during the game.

Two more?

Don'’’t push it.

It'’’s high tide now.

Your challenge is to survive both high tide and low tide as you make your way to that finish line on the other side of the intertidal zone.

Are you ready to see who'’’s the superstar of the intertidal?

Let'’’s do it!

(Chuckling) I'’’m the swimming brother.

I'’’ve got this!

Hold it!

It'’’s only fair to start the size of the animals that live there.

Miniaturize!

Happy?

Good luck!

On your marks, get set!

Go!

You'’’ll have to help us keep an eye on them.

We will.

Whoa!

Ooh, that'’’s got to hurt.

Hmm.

I think I'’’ll go with a little more protection.

Activate Hermit Crab Power!

♪ Charge!

(Grunting) (Panting) Whoa!

Whoa!

Whoa!

Oof!

Are you kidding me?

A creature surviving in this?

It'’’s like living in a hurricane!

KOKI: Martin, are you okay?

I can'’’t hold on.

I'’’m doomed!

What are you holding onto?

A barnacle.

I'’’m touching a creature!

Aviva made a barnacle disc!

(Gasping) What?

Aww.

Hey, no fair.

I have to start as a barnacle larva?

Whoa.

Oh, hey.

How do I hang on?

Oh, barnacle head glue, of course.

Glue that oozes from your head.

Woo-hoo!

Now, that is a solid hold on these rocks.

That is cool.

You barnacles don'’’t get enough credit.

Now: activate plate-making gland.

Oh, yeah, with these hard calcium plates, I'’’ll be protected from waves and predators.

Martin, you good?

Oh, yeah!

Now, this is intertidal living!

Okay, so, Martin'’’s latched on over there.

But I can'’’t locate Chris yet.

Wait.

I'’’m getting a signal.

He'’’s over there, farther out.

Come on, Nolan, let'’’s go check.

Creatures, here we come!

I just wanted to say that.

(Groaning) Those waves were rough.

I think I'’’m a little seasick!

Ah!

I lost my shell, my protection!

I can'’’t last out here without a shell: the fish, the seagulls!

Ah, seagull!

I'’’m not a seagull.

I'’’m Nolan.

(Sighing) But I got to make a change.

Shell, shell, shell, there!

Oh, wait.

You'’’re limpets!

"Limpets"?

Check your discs.

CHRIS: Yes, you made one!

Well, that'’’s a relief.

Activate Limpet Power!

That'’’s more like it, definitely a more stable upgrade.

But what are you?

What'’’s a limpet?

Snail family, right, bud?

We eat algae off the rocks.

See him scrape it up with that rough, tongue-like thing.

Plenty of algae here in the intertidal '’’cause there'’’s plenty of sun for it to grow.

So, limpets and other creatures are the grazers down here.

And check out this foot.

It'’’s one giant muscle that suctions onto the rock, super strongly.

So, waves are not a problem.

I can hang on tight and be mobile when I want to.

And the shell protects you from the waves and predators, right?

You got it.

And, by my calculations, if I keep moving at limpet speed, I'’’ll arrive at the finish line in perfect timing.

Oh, yeah, limpets are going to power me to a win... eventually.

Hey, barnies, here come some more.

Catch the plankton if you can!

Hey, got you!

A little zooplankton!

Wow, these feathery legs are great for snagging the plankton that gets washed in by the tides.

Hey, what'’’d you get?

Ooh, an amphipod!

Nice catch.

Now, this is what I call free, at-home delivery, another great reason to live in the intertidal, that is if you can handle the waves and-- Hey, where'’’s everybody going?

Ah!

The tide, it'’’s going out.

And the Sun, it'’’s hot!

And I'’’m a water animal!

Oh, it'’’ll dry me up and-- Water, water, don'’’t leave me now!

So, this morning the water was way up here, at high tide.

Yeah, and now the tide is going out.

It'’’ll keep lowering until it'’’s down pretty close to the finish line mark.

So, the intertidal creatures are underwater part of the time, and out of the water other parts of the time.

Yep.

I don'’’t know how they do it.

How'’’s Martin holding up?

Not good!

MARTIN: I'’’m drying up out here, got to conserve moisture!

Wow, barnacles even have a trap door that they can close to keep the water in!

Yep, see you when the tide comes back up!

CHRIS: I'’’ve already made it one foot.

Cruising to victory here.

Huh?

Where'’’s everybody going?

Are you done munching on algae?

AVIVA: Chris, just thought I'’’d warn you the tide is receding.

You should get hit by the waves any minute.

Uh-oh, home scars, that'’’s it!

You must be going to your home scars before low tide hits.

AVIVA: "Home scars?"

Sounds like it hurts.

No, like scars in the rocks, a limpet actually scrapes a depression into the rock with his rough tongue.

That'’’s a home scar.

Oh, that must give them a good protective surface to hang on to when the waves come.

And help them seal in tightly so they don'’’t dry up in the sun.

Got to go, I'’’ve got to make a home scar fast!

Amazing that this limpet tongue can grind rock!

(Grunting) It'’’s too late.

My home scar will never be done in time!

I got to find a place to hide.

Hot, hot... dry!

(Sighing) A tide pool.

(Sighing) Yes, that'’’s a life saver.

Yay, you made it.

Yeah, and check it out: A tide pool is a great place to see intertidal creatures.

Some of the things don'’’t look like creatures.

But they are!

Like that animal that looks like a flower is an anemone.

And that animal that looks like a ball of spines is a sea urchin.

I never knew there was so much cool stuff in tide pools.

I'’’m going to go check out some other ones.

Uh-oh!

Nolan, wait!

(Squawking) Predators know about tide pools though.

I feel like I'’’m part of a buffet in here.

Hmm, mussels!

Maybe that'’’d be a little safer!

Yes!

Activate Mussel Power!

Ha!

Woo!

Now that'’’s a pretty strong muscle that snaps these shells closed.

I think I'’’m pretty safe now.

Or not.

Looks like you'’’re kind of stuck here for now, until the tide comes in.

That'’’s okay because when the tide comes back in, I'’’ll be protected from the crashing waves.

Uh-oh, but how will I move towards the finish line?

Wow, I can'’’t believe it!

What?

It'’’s beautiful!

What'’’s beautiful?

What is it!?

Awesome!

Awesome!

What?

I can'’’t move as a barnacle.

What is it?

A starfish!

A starfish!

Or a sea star if you like to call them that.

MARTIN: A starfish?

Oh, let me see!

Let me see!

AVIVA: Oh, he'’’s climbing onto that mussel.

Why is he wrapping around it like that?

He'’’s hugging it.

Wrapping around a mussel?

That means he'’’s going to eat it.

That'’’s a rarely-seen wildlife moment!

I got to see this!

(Grunting) Wow!

It looks like he'’’s pulling it apart!

Why is he doing that?

Okay, he'’’s going to use his super strong arms to pry the mussel open so he can eat the animal inside.

But where'’’s his mouth?

On the underside of the starfish in the centre.

Eww, but it looks like something'’’s coming out of his mouth.

MARTIN: Yeah, that'’’s his stomach.

His stomach?

Yeah, a starfish can actually push his stomach outside his body and put it inside the mussel.

He digests the mussel right inside its shell.

Then the stomach scoops it up and goes back into the starfish.

This is really weird, cool weird.

I know.

I know.

Oh, and I can'’’t see it, no fair.

Sorry, barnacle dude, you can'’’t deactivate, unless you want to lose the challenge, of course?

No, I guess.

But, hey, starfish are pretty good underwater walkers.

If I could get starfish power after the tide comes in, I can get mobile and head to the finish line.

I think I can help with that.

Starfish Power Disc coming up!

Hold tight, Martin!

Jimmy, can you help me test something?

Hmm?

Aww, I thought you said I could relax today.

Hmm, okay, yeah, just sit there and relax while I test the tube feet features.

(Grunting) They work!

See, each one of the tubules attaches using suction.

And with so many of them covering the arms of the starfish, it makes them super strong.

Ah!

Can I come down now?

Just a sec.

See that round thing at the top of the starfish?

Lots of people think it'’’s an eye.

But it'’’s not.

It'’’s a way for the starfish to get water into its body.

That whole system of water-filled tubes is the way that the starfish moves it'’’s arms and activates it'’’s little power suckers.

See?

It works with water power.

(Grunting) I get it!

I get it!

And when the starfish wants to release the suckers, the water system helps with that too!

(Groaning) That was not my idea of relaxing.

But Jimmy, you didn'’’t even have to get out of your chair.

(Laughing) Okay, this should do it.

Every intertidal creature needs a way to deal with the crushing waves.

And a mussel holds on with sticky, rope-like threads that attach to rocks.

All right: all set.

Bring on the waves!

Hey, dog whelks.

Come here, boys, come on!

Come here, doggies!

Cool, a dog whelk is a totally different kind of snail than the limpet.

These guys don'’’t eat algae.

They'’’re predators.

They eat things like clams, barnacles, and-- uh-oh, mussels!

Okay, doggies, nice doggies, down, doggies.

Oh, no, not your sharp, drill-like tongue!

He'’’s drilling a hole in that mussel'’’s shell!

A shell is no protection from these guys.

Ooh, injecting the digestive juices!

That'’’ll turn the mussel into a soupy mix that he can just slurp up with his straw-like tongue!

Oh, man, it is tough out here!

You fasten yourself to a rock to deal with the waves.

But it makes you an easy meal for the predators.

No, no!

No, please don'’’t make a soup out of me!

I can'’’t move!

The downside to sticky threads!

The sticky threads!

I almost forgot.

That'’’s the mussels'’’ defense against dog whelks.

Sticky thread defense!

Sorry, doggies, but I'’’m going to have to tie you up for a while.

Chris, the tide, it'’’s coming back up!

CHRIS: Thanks, Nolan!

Hmm, I'’’m going to have to find a way to get mobile fast!

Well, the tide'’’s almost back up again.

They both made it through high tide and low tide.

Yup, it looks like it'’’s going to be a race to the finish line.

Chris is closer than Martin.

But they'’’re both stuck as creatures that don'’’t move.

Hey, Aviva.

We gave them the new starfish discs.

Great, now we'’’d better get to the finish line.

This could get interesting.

Come on, starfish, I'’’m a tasty barnacle, a starfish favorite.

Yum!

Oh, yeah, Aviva finished the Starfish Power Disc just in time.

That'’’s right, come on, buddy.

Activate Starfish Power!

Whoa, oh, oh, oh, oh!

Yes, I'’’m mobile!

Finish line, here I come.

Don'’’t worry, buddy.

If I ever get out of here, I'’’ll cut you loose before I go.

But if I don'’’t find a way out of here soon, Martin'’’s going to win this challenge.

Aww, I need a little luck here.

Yes: something coming my way.

Oh, no, it'’’s Martin!

Hey, Chris!

See you at the finish line.

CHRIS: Hey, a lobster.

Come over here, buddy!

Ah, yes, the final stretch to the finish line and it looks like everyone'’’s come out to cheer me on.

Hey, sea urchins, anemones, how you doing?

Limpets, thank you.

Thanks, mussels.

Oh, hey, and another starfish: Great to be you, buddy!

Uh-oh.

Starfish smell receptors are smelling something dangerous.

Something fishy is going on, something star-fishy, that is!

Now I recognize you.

You-- You'’’re a sunstar, a starfish-eating starfish!

Got to go, full speed!

Oh, no, he'’’s gaining on me!

If I can just make it to the finish line...

I'’’m not giving up!

I'’’ll lose a limb before I lose this race!

That'’’s it!

Starfish can detach arms if they'’’re in danger!

Then the arm will grow back later.

Detach!

(Grunting) Detach.

Detach.

Detach!

Whoa!

I'’’m free.

Good thing that'’’s a spare arm.

AVIVA: Calling Kratt Brothers!

It'’’s now officially high tide!

First one to the finish line is going to win the Star of the Intertidal trophy!

Easy!

Oh, yeah!

I'’’m even going to win this with one less starfish arm.

CHRIS: Wahoo!

Speeding to the finish with Lobster Power!

NOLAN: Go!

Go!

Go!

Hurry, faster!

Forget the race between the tortoise and the hare.

What about the sea star and the lobster?

It'’’s going to be close.

Sorry, bro!

I'’’ve got lobster tail flick power!

Sorry back!

I'’’ve got starfish suction arms!

(Grunting) Whoa!

I can'’’t see!

Whoa!

I cant see!

(Grunting) I won!

No, I won!

No way, you haven'’’t even finished crossing the line.

You left an arm back there.

So?

I beat you by a sucker foot.

Oh, no, not again!

(Laughing) Well, guys, great job making it through a full tide circle in one of the harshest habitats on Earth.

But after all that, you'’’re still going to have to find a way to share that shell.

It'’’s officially a tie.

Aww, well, I guess we could share it.

Yeah, I guess it is even more special now that we know how rough it is out there for these creatures.

And what amazing powers they have!

So, why not share it?

That way, the shell can remind us both of the awesome creatures of the intertidal.

Uhh, guys, look.

Hey!

Hey!

That'’’s ours!

(Laughing) Okay, you can have it.

Yeah, you need it more than we do, anyway.

Good luck out there, buddy!

You'’’re all the real stars of the intertidal!

So, intertidal creatures have some incredible adaptations and abilities.

And if you'’’re lucky enough to be near a beach, it'’’s a great place for a creature adventure.

All right, so, is everybody ready to go and see what kind of intertidal creatures we can find?

Yeah!

Yeah!

Let'’’s explore!

All right!

MARTIN: Keep your eyes peeled.

You never know what you'’’ll find.

Barnacles!

Yes, barnacles!

These are creatures!

MARTIN: Look at all the barnacles over here, on this rock, right in the direct sun.

The barnacles are all closed down, protecting themselves from the drying heat of the sun.

They'’’ll survive here until the tide comes back in, covering them with cool water.

CHRIS: And when the high tide comes in, they'’’ll stick out their feathery legs and catch little, tiny microscopic animals that come in with the tide.

Oh, wow, you got a periwinkle snail, a lot of Periwinkle snails.

They'’’re grazers.

They feed on the algae that grows on the rocks.

I found a mussel!

Oh, yeah, that'’’s a mussel, all right, with a pink species of algae growing on it.

So, the grazers, like the periwinkle snails, might eat the algae.

But they wouldn'’’t eat the mussels.

You know who would eat the mussels?

Who?

A dog whelk.

It'’’s a special kind of predator snail.

MARTIN: That is not just any pretty shell.

Do you know what that is?

That'’’s the shell of a dog whelk.

What this snail does: crawls around the rocks, searching for mussels.

Then when he finds '’’em, he drills a hole in the mussel'’’s shell.

See that?

And then, the dog whelk drinks up the mussel inside.

Cool!

Chris, look what I found!

Oh, this is a crab that just molted!

Look.

Here'’’s his old shell, right here.

It split open.

He crawled out.

And look how much bigger he is now.

Now his new shell'’’s going to harden.

And he'’’s going to be protected again, with a brand new, bigger shell.

Whoa, that'’’s a cool starfish.

These guys are predators.

These two feet are why they'’’re so strong.

They have such a strong grip.

And they can actually pry a mussel apart.

When you really look closely, there are so many creatures out here.

All with incredible creature powers!

Intertidal Creature Powers!

Intertidal Creature Powers!

♪ To find out more about cool animals... and collect your own Wild Kratts Creature Powers... Go to the Wild Kratts website-- at PBSkids.org BOTH: We'’’ll see you there!