I still don't get it.
Why do we need to know how to work out what X is?
Maybe they figure we're gonna be pirates.
This is good.
Algebra?
Being with each other.
Like, you know, boyfriend and girlfriend.
I know. I've been busy.
I noticed.
Just something I need to sort out.
So let's sort it out together.
Tell me what it is.
There must be something I can do.
That's a great idea.
But we definitely need to finish this first.
You don't wanna tell me.
I do.
Just right now, my mind's on X.
Miss Santos would be impressed.
Not if my grades don't improve.
They will, if you study.
But you've got some catching up to do.
Thanks for helping me.
You're welcome.
I'll save what we've done.
I'll do it.
What's this?
Nothing. Just something I found.
Tridents as symbols in aquatic mythology?
It sounded interesting.
You think? Okay, I got distracted.
Too many distractions and you'll flunk Algebra.
I'll try harder. I promise.
So Rita thinks the trident that you and Zac saw on Mako
is the same one as in the mermen legend?
She doesn't think, she knows. Wow.
Not disturbing you, I hope?
All this talk about tridents
that could change the world as we know it
not putting you off your threading?
Hey, I'm listening. I can do two things at once.
Just do one. Your jewelry can wait.
Hey, actually, you know what,
you should put some green tortoise shell on there.
Not really the look I'm going for.
Why not?
It's old fashioned. That's something Rita would wear.
What?
It would be so cool.
What? Nothing.
If Zac gets hold of the trident, mermen could rise again
and conquer the oceans.
But, hey, as long as we've got the right accessories—
All right. Okay, we get the message, all right.
If Zac gets the trident that's a bad thing.
But it's locked away on Mako.
He's gonna be looking for it.
And you'll be watching him,
making sure he doesn't find it, right?
Hey, girls. What are you up to this morning?
Oh, nothing that'll get us in trouble.
That's what I like to hear.
I love the bracelet. I've got one just like that.
Really? Only in tortoise shell.
We have to go. Where're you heading?
To the cafe. Oh, yeah.
We're gonna need some money.
More? Yeah, we're all out.
It doesn't seem to last very long.
You don't say. I find that too.
What? Hello.
What about all this?
You tried that once before. We all know how that ended.
Surely we can do something with it.
People would ask questions.
I don't wanna draw attention to myself.
Well, to be honest, if you're out of money,
you should really just go pick some up.
It's not just lying around out there. I have to work for it.
That's such a dumb system.
Well, it's the only system we've got.
So you're just gonna have to make do.
Hey, guys. Hey.
Has Zac been in? Not yet.
We've got a great special today. Seafood wraps.
Sounds perfect. I thought you'd like it.
Yeah, we'll take three seafood wraps, thanks.
Minus the wraps. Coming up.
Wow, that's so cool.
Where'd you get it? I made it.
I've never seen anything like it on the coast.
It's really different.
I'm gonna see if Zac's at home. I'll be back.
Come check this out.
Oh, really nice.
I reckon we could sell them here in the shop.
Sell them? For money?
Can I have a look? Sure.
Yeah, I—I think this could really work for us.
I'll clear some space. Cool.
How much space are we talking about?
Uh, let's try, say, 20 to start with.
Make it 50. Nixie.
I don't have room for 50.
Well, we'll leave you to think about it.
There's nothing to think about.
I don't want 50.
It's 50 or nothing, sorry.
Fifty? I don't wanna make 50.
Yes, you do. Think of the money.
No more having to beg Rita for it.
We don't beg her, we just take it.
Well, there's no more to take, so we have to make some.
You mean I do.
Yes. Now you get the idea.
I'll take 30. Forty.
Thirty-five. Thirty-six.
Okay, 36.
But I want them today. Today?
No problem. They'll be here.
I don't have enough pieces to make 36 bracelets.
Well then, you'd better go find some, friend.
But it'll take forever.
Sorry. Better get started then.
I haven't even eaten. Yeah, she'll have hers to go.
Zac?
Zac, you there?
How can you not be worried?
Look, land people have a lot of information on heaps of topics.
Doesn't mean he's found anything useful.
It means he's still looking. And if he doesn't find it there,
where's he gonna look next?
Okay, okay. Let's go.
Wait a minute. Where's Sirena?
She's gathering starfish and shells to make bracelets.
Bracelets?
What do you mean, he saw something?
Something of what? Something of me. In the water.
He saw you? A bit.
I think. I don't know, I swam away.
Oh, well, that's all right then.
A mermaid swimming off,
there's nothing to notice about that.
What are we gonna do?
Maybe nothing.
We don't know for sure he saw anything.
And even if he did, there's no reason
he'd automatically think mermaid.
Hmm. No reason at all.
Don't panic.
That's right.
He might have thought it was just a fish.
No way it was a fish.
But you said you only saw the tail.
Yeah. And I've never seen a fish with a tail like that.
Maybe it was a dolphin.
That was no fish and it was no dolphin.
Turtle?
What else could it have been?
There's only one place I've seen a tail
anything like that before. On me.
There's another merman out there.
I really doubt that. Why?
Why would I be the only one?
No one's seen me.
What's to say there aren't others?
Think about it. You've got the trident on your mind,
and suddenly you're seeing mermen.
That wasn't a myth I saw.
It was real.
He thinks he saw a merman.
He said that?
Well, technically he didn't see a merman.
We don't even have the same color tails.
This is all because of your crazy jewelry idea.
It's a great idea. We can earn a bunch of money.
And when our secret's out, we'll be
the richest exhibits in the display tank.
So what do we do now?
Watch him and see what he does next.
Well...
last night, today, suddenly you can't keep away from me.
I really need to talk to you.
Sure. What is it?
It's when you guys go out diving.
Do you wanna come with us?
If you do, dad's got a group going out next week.
No, no. It's not that.
I just wondered, when you've been out around Mako
if you've ever seen anything strange?
What do you mean by strange?
Something you didn't recognize.
We're pretty much across all the species out there.
Not that there's many.
You ever heard of anyone reporting anything?
Like...
a creature?
A creature? Yeah.
I've kind of heard stories.
There's heaps of stories about Mako.
But I don't know anyone who's ever seen a creature.
It is pretty random. Just thought I'd ask.
Thanks.
That's it?
Yeah, I'll catch you later.
Hey.
Have you seen Zac today? No.
He was in kind of a weird mood.
I'm sorry if I don't seem surprised.
He was on about Mako.
What about it?
He was asking if I've ever seen anything strange out there.
Like creatures.
Creatures? Yeah.
Seemed kind of hung up about it.
And he's been checking out all these sites on mythology.
Yeah, he's got a thing about Mako at the moment.
That's why he's always dragging me over there to go camping.
What's so special about it?
Beats me.
There's nothing out there, is there?
Seriously, the place is deserted.
I thought so.
I haven't been there for ages, since...
Dad and I used to dive the underwater caves.
There's underwater caves?
Yeah. All around the island.
Most of them have never been charted.
You don't know what Zac's talking about?
No.
Okay.
Wow.
It's really nice. Yeah.
Who made it?
So how about this?
We've got orders and we haven't even got them in stock yet.
There's not gonna be any stock.
I don't think I can do this after all.
Well, why not?
Well, I've made bracelets for myself and my friends,
but I've never made any to sell.
Hey, there's no need to be nervous.
People are gonna love them.
It's not just that.
Nixie dragged me into this,
and it takes ages to collect all the pieces.
I can't possibly fill the order.
Well...
maybe just make as many as you can.
Evie won't mind.
She did only want 20.
Could you manage that?
I'm not sure.
You'd do an amazing job, I know you would.
Well, maybe I could do it with the stock I've got put away.
All right. Okay.
I'll get to it.
Okay.
Underwater caves?
That's what Evie said.
There could be anything down there.
You know, she's kind of worried about you.
You haven't told her anything?
About what's going on with me? Of course I haven't.
All that stuff about the creatures, I just told her
you were having some kind of obsessive-compulsive meltdown.
As long as you covered for me.
Hey, you can count on me.
I know I can. Thanks, man.
You got it.
Come on in. Thanks.
I'll catch you later.
What's happening? I'm actually just on my way out.
Oh. Anywhere interesting?
There's underwater caves out around Mako.
No one knows what's down there.
So?
So anything could be hiding in there.
Or anyone. I'm gonna find out.
You really think that's a good idea?
I have to do this.
Oh. Grab the door on your way out?
There's a lot of caves out there.
Only one of them leads to the Moon Pool.
What are the chances?
We have to go out there.
Where's Sirena?
Sirena just left.
Well, do you know where she went?
Not really.
We don't have any more time to look for her.
All I know is that she went to get more stock.
I was out looking for caves.
I couldn't find anything.
No mermen?
Nothing.
Guess it must have been a dolphin I saw.
So you gonna say I told you so?
Maybe.
Oh, would've been nice to have found someone else like me.
Just to have someone to talk to
who knows what it's like having a tail.
I'm happy to talk about it.
If you've never had one, trust me, you don't know.
I guess not.
Hopefully I'll have better luck next time.
Next time?
Next time I go out there. There you are.
Um, I better get going. See you around.
Thanks for coming over.
What's up?
I went through the algebra we did the other night.
Made some corrections.
You need to see where you're going wrong.
Wow.
Obviously too many distractions.
Aren't you gonna...
stay?
Here's your profit.
I told you they'd like them.
Well, that's the last of them. My supply has dried up.
Doesn't matter. You did a great job.
Well, I didn't wanna let anyone down, especially you.
You could never let me down.
It's amazing what you can do when someone believes in you.
And I do. Completely.
But I have a confession to make.
When I set this whole thing up...
it was really just an excuse to keep you coming in here.
Well, I'll make sure I do, then.
Then it was worth it.
They're special...
just like you, Sirena.
Okay, so he definitely bought that it was a dolphin in there?
Only just.
I don't think we'll be so lucky next time.
There can't be a next time.
I'm sorry there was a this time.
He just caught me off guard. Twice.
Well, it's a big reef.
You're lucky one of us found you.
The message is, this can't happen again.
He's gonna be out there looking. So...
from now on, we have to be on guard.
On guard. All the time.