- ♪ I swam all around the world ♪ ♪ I'm seeing this ocean on my own ♪ ♪ And then I found my way to Reeftown ♪ ♪ And I knew that I'd found my home ♪ ♪ And met my friend, Bubbles here ♪ - ♪ Our friendship is the best ♪ all: ♪ Oh, dive in ♪ ♪ With Splash and Bubbles ♪ - ♪ Dive in ♪ all: ♪ We're making friends in the ocean ♪ ♪ Come along with us and see it all ♪ - ♪ With pals like Dunk and Ripple ♪ ♪ We'll explore this world together ♪ all: ♪ When you share adventures with your friends ♪ ♪ It makes them so much better ♪ all: ♪ Oh, dive in ♪ ♪ With Splash and Bubbles ♪ - ♪ Dive in ♪ all: ♪ We're making friends in the ocean ♪ - ♪ In this world beyond belief ♪ all: ♪ Come see the greatest reef ♪ ♪ Oh, dive in ♪ ♪ With Splash and Bubbles ♪ - ♪ Dive in ♪ all: ♪ Start making friends in the ocean ♪ ♪ Come along with us ♪ ♪ Dive right in ♪ - ♪ Duh, duh, duh, duh, duh ♪ - Rise and shine, everybody!

[giggles] Do you know what today is?

- A day you woke us up too early?

- Aw, I'm sorry, Dunk.

- That's okay.

I'll just go back to... - Wake up, Dunk!

- Ahh!

Who?

What?

Why?

Why am I up again?

- Well, today is something very special.

- It is?

- [laughs] - What's going on?

- Wha-- today is the anniversary of the day that Splash came to Reeftown!

- It is?

Hey, Ripple!

It's Splash's "day he moved to Reeftown" anniversary!

We should have thought about that!

What are we gonna do?

- Oh, we've already got that covered.

- We do?

- Yep.

We've got a great day planned for The Day That Splash Moved To Reeftown Anniversary Celebration.

- Aw, you guys remembered my big day!

- Of course we did, buddy!

You think we'd forget about an important thing like the Day You Moved To Reeftown anniversary?

- Oh, well, that's so nice.

So what are we gonna do to celebrate today, guys?

- Yeah, what are we gonna do?

- [stammering] [together] Dunk!

- Uhh...oh!

I mean, uh we could do that thing... or that other thing... or... - We were thinking that we could remember back to all the fun things we did together when you first came to Reeftown, and, uh, do 'em again!

- That sounds like a lot of fun!

What should we do first?

- Oh!

Play in a mud puddle?

- Make some sand art!

- Oh!

- Yeah!

Or go down the big slide at Dorsal Park!

- So what do you think we should do first, Splash?

- Hmm, I think we should do all of those things!

- We can each prepare one fun thing to do with you.

- Sounds great!

- Yeah!

- Gotcha.

I'm going off to make some sand art.

I'll make you something great, Buddy.

- And I'm gonna find the muddiest mud puddle ever!

- Great!

- Wanna go on the slide with me while we're waiting?

- Sure!

Let's go!

- [laughs] - Okie dokey!

- Whoo-hoo!

- Whoo-hoo!

Ah!

- ♪ Do-do-do-do-do ♪ - Whoo!

Ha-ha-ha!

- ♪ Doing, ooh ♪ - Oh, yeah!

♪ I don't know what I'm doin' ♪ ♪ I'm just doin' it ♪ - ♪ Do-do-do-do, he's doing it ♪ - ♪ I'm playin' and I'm jumpin' ♪ ♪ I'm just movin' it ♪ - ♪ Do-do-do-do-do, he's doing it ♪ - ♪ I don't know what I'm doin' ♪ ♪ But I'm gettin' it done ♪ ♪ Everyone can see that I'm havin' some fun ♪ ♪ And I don't know what I'm doin' ♪ ♪ I'm just doin' it ♪ - ♪ Do-do-do-do-do, he's doing it ♪ - ♪ Whatever it is I'm working on ♪ ♪ Well it's working for me ♪ - ♪ He's working it out now ♪ - ♪ I don't worry if it's right or wrong ♪ ♪ I'm just do, do, doin' what comes naturally ♪ ♪ Everyday I'm coming up with something new ♪ ♪ I'm happy when I do it, and I like what I do ♪ ♪ And I don't know what I'm doin' ♪ ♪ I'm just doin' it, doin' it ♪ ♪ Do, do, do, do, doin' it ♪ Ha-ha!

Yeah!

Whoo-hoo!

Yeah!

Ah.

I think I'll call this masterpiece, "Art For My Friend Splash."

Huh?

Huh?

Guys, I know you're back there!

If you want to see my sand pattern, just come out and look!

[gasps] Who are you?

Another puffer fish!

Are you my twin?

- [giggles] Hi, my name is Puffy.

Who are you?

- I'm Dunk.

Wait, you look like me.

But you don't sound like me.

- That's 'cause I'm a girl puffer fish and you're a boy puffer fish.

- Right, I'm a boy puffer fish, silly me!

- You're funny!

- No, you're funny!

[both laughing] So where did you come from?

- I live on another reef, and well...

I was just swimming by, and, well...

I came to tell you that I really like your sand art.

- Oh!

Uh, this usually doesn't happen.

I'm just a little bit.. - Nervous?

- Yeah.

- Yeah.

Your art is so detailed.

The patterns are beautiful, and uh... Ah!

- Hey!

You puffed up too!

- So is it noticeable?

- You bet it is, and I love it!

- Really?

[Dunk deflates] Of course!

Finally, someone else who really understands what it's like to be a puffer fish.

- Um, well, I'm really glad to know you, Dunk.

And, um, maybe you can show me around your reef?

I'd really like to see it.

- I'd love to show it to you.

[both laughing] - Ahh!

- Ahh!

[both laughing] - [laughing] Yes, yes, and yes!

- Hey, guys, I found my mud puddle.

- Oh that's great, Bubbles!

- Whoo-hoo-hoo!

[laughter] - Hey uh... wait, where's Dunk?

I thought he'd be here by now.

He said he was gonna make some sand art.

It's taking him a long time.

- Well, let's go find him!

Let the anniversary celebration continue!

- Whoo-hoo!

- Yeah!

- Happy anniversary!

- Come on, guys!

- [loud chomping] - There's his sand art.

- But where's Dunk?

- [munching] - Hmm, um, oh!

Let's go ask Chompy.

- Oh!

Okay.

- Yeah.

- Hi, Chompy!

- Hey!

- Oh, hi, kids!

[laughs] Where are my manners?

Talking with my mouth full again!

- That's okay, Chompy.

We were wondering if you've seen Dunk?

- Sure, I've seen the original Dunk and the Dunk of another color, kinda pinkish?

They went that way.

- Huh?

- Dunk of another color?

How could that be?

- Well, maybe we should go back to the slide and wait for him?

- Oh!

Good idea, Ripple!

Well, thanks, Chompy!

- Yeah.

- Say hi to Dunk!

And Dunk of Another Color for me!

- So this is Coral Cove.

Most of my friends sleep here.

- Oh, it's nice.

- Oh, hey, Gush, this is my new friend, Puffy.

- Oh, nice to meet you.

- Oh, nice to meet you!

- Gush is a frogfish.

- Ah, how interesting.

- Yes, and some other interesting facts about frogfish are they have gills behind their fins, and they use-- - And they can propel themselves with jet-powered speed.

Not to mention excellent camouflage.

- Why, thank you.

- Wow.

You're my first friend who knows as much about everything on the reef as I do!

- I think Dunk here has met his fin-facts match.

- [giggles] - I think I have.

Let me show you around Reeftown some more!

- Oh, that sounds great.

- Oh, Dunk?

Can I ask you something?

- Oh, uh, sure, Gush.

- Aren't your friends expecting you today for Splash's anniversary of his first day in Reeftown?

- Oh, no!

I guess I got so busy showing Puffy around, I completely forgot.

- I think Ripple said they were waiting for you at the slide.

- But I have Puffy with me.

She doesn't know them.

- So?

- So... what if they don't like her?

Or what if they like her too much, and then she doesn't have time for me?

- Just introduce Puffy to your friends.

I guarantee you can make new friends and keep the old.

- Gush, you are very wise.

- [laughs] And don't forget my jet-powers!

- Wow!

- Wow!

- Look at him go!

- Jet power!

- Come on, let me show you Dorsal Park!

- All right.

- Whoo-hoo-hoo!

- Splash, that's so good!

- Yeah, thank you!

You too!

- Whoo-hoo!

- There you are!

- Oh!

- And, uh, Dunk of another color!

- Splash, Bubbles, Ripple, this is my friend, Puffy!

- Oh!

- Nice to meet you, Puffy.

- Nice to meet all of you.

- Wow!

Did anyone ever tell you that you two look exactly alike?

- Yeah.

Except for the pinkish color.

- And that's not all we have in common.

[giggles] [both inhale] - Whoa!

- Oh, look!

- We both kinda... [together] Puff up!

[both laugh] - Well, uh, do you want to play on the slide with us?

[together] We'd love to!

- All right, come on!

Let's go!

- Great!

- All right!

- Dunk, I really like your new friend, Puffy.

She's nice.

Why didn't you bring her here earlier?

- Well, I kinda wasn't so sure it'd be okay.

- You weren't?

- Yeah, I was so excited to have a new friend that I wasn't thinking about my old friends for a while.

And then I kinda got worried about mixing them together.

- But why?

- Mostly I was worried that Puffy and all of you guys wouldn't be friends, and that someone would feel bad.

- Dunk, old friends or new friends-- you can never have too many friends.

- That's what I realized.

Uh, right after Gush told me, that is.

- Well, I'm glad you came, Dunk.

This anniversary of Splash coming to Reeftown day wouldn't have been complete without you.

- Thanks, Ripple.

- Oh, oh, oh!

Oh, one more piece of advice.

Show her your Daredevil Dunk Dive Slide!

She'll like that.

- Great idea!

- Yeah!

Let's go!

- Whoa!

Look, I'm doing it!

I'm doing it!

- Go, Dunk, Go!

[all cheering] - Double Dunk Dive!

- Whoo-hoo!

- Here he goes!

- Whoa!

- Yeah!

- Wow!

That looked like so much fun!

- You should try it.

One tip.

Don't puff up in the middle of the curve, because...ouch.

- Okay!

Here I go!

Don't puff up in the middle of the curve!

- Puffy!

- Yeah, Puffy!

- You can do it!

- [laughs] - Thanks for being so nice to Puffy, guys.

- Well, of course.

We love making new friends.

- I'm so glad to have friends like you.

Oh, and Splash, I hope you've been having fun on your anniversary of the day you came to Reeftown celebration.

- Oh yeah, buddy, the best time ever!

In fact, you brought me the nicest anniversary surprise ever.

Someone newer to the reef than I am!

- [laughs] - Go for it, Puffy!

- Come on, Puffy!

- Yeah!

- Guess that makes this Puffy's Welcome to Reeftown Day, so now we have two things to celebrate!

- Whoo-hoo!

[all cheering] - All right, you guys.

Let's go up to the top!

Last one there's a broken barnacle!

- Yeah!

- Come on!

- [snoring] - I don't want any more plankton.

I just... [mumbling] - Whoa!

- Whoa!

Huh?

- Whoa!

- Whoa!

- Is it just me or is the reef a little...shakier than usual?

- What in the deep blue sea is going on?

- Hold on, buddy.

I just need to stop swooshing.

- What was that?

- Oh, it was just the big shake.

- Yeah, it happens from time to time.

- Uh, I don't remember that ever happening before.

- Well, don't worry, buddy.

Next time won't be that bad.

- Next time?

You mean... there are more of them?

- Well, yeah, sometimes you get smaller shakes after the big shake.

It's no big deal.

- [yawns] Hey, I heard there was a big shake.

- Heard?

You didn't feel it?

- Ah, I must've slept right through it.

- You slept through it?

How did you do that?

- Well, when you have 499 brothers, you learn to sleep through a lot of commotion.

- Well, is everyone okay in there?

- We're okay in here, Splash.

Just a little messy.

But thank you for asking!

- Yeah, just a few pebbles and shells fell down.

No big deal.

I'm gonna help my papa clean up.

My brothers always put things in the wrong places.

Anyway, gotta go!

See ya!

- See ya!

- Yeah, see ya, Ripple.

See ya.

- Are you all right, Splash?

- Huh?

Oh, uh, me?

Yeah, of course.

Why wouldn't I be?

I mean, there was a big shake.

And that's normal...apparently.

And uh, I, uh...

Okay seriously, how is everyone so calm about this?

- Oh, no, Splash is gonna puff up!

Deep breaths, Splash.

Deep breaths.

- Dunk, fusiliers don't puff up.

- Oh, right.

- Guys, I, uh, I feel like I'm being really silly about this.

I'm sorry.

- You're not being silly, Splash.

It was your first big shake.

- Anyone can get nervous after their first shake.

I know I was.

Or at least I think I was.

- Yeah.

I guess we're just used to them.

- Well, do you know what the big shake is?

- [laughs] Of course!

It's, uh... Yeah, I don't know what it is.

- I bet there's a perfectly good explanation for why it happens.

If we find out, would that make you feel better, Splash?

- Well, yeah.

Maybe, I guess so.

- You know what?

Gush knows so much.

I bet he knows what causes the big shake.

- Oh, yeah.

- Huh?

Let's go find him.

Come on.

- Oh, great, thanks, guys.

- That was quite the big shake this morning.

Did you kids feel that?

- Yep, and it was Splash's first one!

- Oh!

- Yeah.

And we were hoping that maybe you could help me be prepared for when it happens again.

- Oh that's a good idea because they're pretty unpredictable.

But even if you don't know when they're gonna happen, you can always be prepared for what will happen.

- Well, like what?

- Well, the water for one thing.

It'll move in all sorts of directions.

Swishing back and forth.

- That's how I woke up.

I was like swish!

And swoosh!

- And it can kick up loose pebbles and sand, so you should find a secure place to take shelter so nothing falls on you.

- Thanks, Gush.

That's--that's good advice!

- Hey, no problem!

You kids be safe now, okay?

- Oh, we will.

- Thank you, Gush.

- Bye, Gush!

- Bye!

- So, see, Splash?

The big shake just causes the water to swish around.

Not so bad, right?

- Yeah, but it felt like all of Reeftown Rock was shaking!

- Maybe we need to go deeper toolve the problem.

- We need to see someone who spends all their time on rocks.

But who?

- [gasps] Pearlene!

- Pearlene!

- Yeah!

- Yeah!

- Ooh, I remember my first big shake.

It was all rumbly.

I thought I was gonna shake right on out of my shell!

I sure was nervous.

- I'm glad to hear I'm not the only one who feel that way, Pearlene.

Well, except for the shell part.

- And you don't get nervous anymore, right, Pearlene?

- Nope.

Sometimes it feels like the ground underneath my rock is rolling, and I just kinda go along for the ride.

- The ground rolls and makes your rock shake?

- That's it.

But luckily, if it gets too shaky, I always have my trusty shell to keep me safe.

- Ooh!

- Whoa!

- Oh!

- Hey, hey.

Hey, it's okay there, Splash.

This is just another one of those little shakes that happen afterwards.

See?

It's all over.

- Oh, oh, yeah.

Thanks, Bubbles.

- See?

All safe in here.

- Wow, that shell is handy in more ways than one!

Well, thanks for all your help, Pearlene!

- You're welcome.

- Bye!

- Bye, Pearlene!

- So, does the big shake start in the ocean floor?

- Oh, it starts a lot lower than that, kids.

- Hi, Flo!

- Hi, Flo!

- So it sounds like you're learning a lot about earthquakes!

- What's that?

- Earthquakes?

- It's when the ground underneath you quakes, which is also another word for shakes.

- So, earthquakes happen when the ground underneath us shakes?

- Right.

You see, the closer you are to the ground, the more you feel it.

So if you're in the shallow waters of Reeftown, you're gonna feel it more.

- That's probably why you've never felt it before, Splash!

- Well, I-I guess that makes sense.

Well, we still don't know why that happens.

- Well, I wish I could help you there, Splash.

But I do know that earthquakes are caused by something under the ocean floor, but I've never been able to go that far down to figure out what it was.

- Hm...if only we knew someone who was an expert on things that happen in the deep?

- Bubbles, what are you talking about?

We know Lu.

Ohh.

- Ah, Dunk!

- All right, well, thanks Flo!

All right, you guys.

Let's go even deeper!

- Yeah!

- See you later!

- Bye, Flo!

- Bye, kids!

- So you kids felt it all the way up there?

'Cause we really felt it down here.

- Oh, yeah, we were shaking and shimmying.

And I'm not talking about dancing.

I'm talking about our cave!

- [laughs] - Oh, are you guys okay?

- Oh, sure.

Nothing to worry about.

It's just a part of nature.

Earthquakes can really make it rattle down here.

But they're an important part of our world.

- Why would earthquakes be an important part of our world?

- Well, to find out, we gotta go even deeper than this, kids!

You ready?

- Yeah!

- Yeah!

- Let's go!

- Okay!

- Whoo-hoo!

- Going deeper!

- You might remember the submarine volcano?

- Ah!

- Who could forget?

This place is amazing!

- Well, it wouldn't be here if not for earthquakes!

- Wait, what?

- That's right!

Earthquakes happen when the ground way underneath the ocean floor pushes together.

Sometimes it pushes together so hard it causes the shaking you felt earlier, which can be a little scary.

- But all that pushing also helps to make some really wonderful things, like mountains or this volcano!

- You said it, Bobby!

All that movement underground puts pressure on the magma way down below.

When there's too much pressure... Kablooey!

Eruption time!

- Whoa!

Speaking of... here it comes!

[all gasping] all: Whoa!

- Everybody okay there, kiddos?

- Yeah!

- All good.

- How about you, Splash-aroo?

- Actually, I'm just fine.

Huh.

Now that I know that earthquakes are just a normal part of nature, I... well, it makes me feel better.

Hey, thanks, Lu!

- Ha, no problem!

Ooh!

Would you look at that?

- That is some magnificent magma!

- Sure is, Bobby.

- Whoa.

- And then we learned that you were right, Flo!

- I love that!

What was I right about?

- That earthquakes do start underneath the earth.

Way underneath the earth when the ground pushes against itself and causes everything all the way up here to shake!

- Can you believe that?

- Ahh, ahh!

- Shake, shake, shake, shake!

- I sure can, Dunk, because our whole planet is connected.

The water, the air, and even the land above are all part of our one big ocean!

[upbeat music] [Flo humming] ♪ I think it's terrific ♪ ♪ To know the Atlantic and Pacific ♪ ♪ The names of the Indian and the Arctic ♪ ♪ And the Southern too ♪ ♪ But I'm here to say I see them another way ♪ ♪ I just see One Big Ocean ♪ ♪ It's all connected ♪ ♪ One Big Ocean ♪ ♪ It needs to be respected ♪ ♪ And I wanna tell you we've got to protect it ♪ ♪ Our one big ocean ♪ ♪ Gotta do our best with this world we are sharing ♪ ♪ And it's good to know that so many are caring ♪ ♪ 'Cause what they're doin' up there ♪ - ♪ Doin' up there ♪ - ♪ Matters right here in our ♪ ♪ One Big Ocean ♪ ♪ It's all connected ♪ ♪ One Big Ocean ♪ ♪ It needs to be respected ♪ ♪ And I wanna tell you we've got to protect it ♪ ♪ Keep it growing and giving ♪ ♪ Colorful and living ♪ ♪ One Big Ocean ♪ ♪ One Big Ocean ♪ I love this place.

- Whoa!

- Whoa!

- Hey, are you okay, Splash?

- Yeah, you know what, I'm--I'm fine.

Well, now that I know what causes the big shakes, well, I feel much better.

[gasps] Hey, do you think that last big shake made another mountain somewhere?

- Yeah!

Or...or maybe a volcano!

- Ooh, so cool!

Let's go find it.

- I'm gonna find it first!

- What?

- No, wait for me!

I'm gonna find it first!

- ♪ Da-da, da-da ♪ ♪ Ooh-ooh, ooh-ooh ♪ ♪ Oooh ♪ ♪ Da-da, da-da ♪ ♪ Ooh-ooh, ooh-ooh ♪ ♪ Da da da da da ♪ [children giggling] [dragonfly buzzing]