There is one with just one orca in it.
Five pigeons land on the glass edge of the tank.
Eventually, there is the sea.
Bella checks for people. There are no lights; there is no sign of anyone existing nearby without a light. She demorphs and starts wading out into the ocean.
<This thing is definitely predatory. I haven't been a bear so I can't compare, but it sounds "chill" the same way you guys described the grizzly, nothing hunts orcas. I don't think you'll attack each other. You might go after seals if we found seals, or something.>
He demorphs, swims out to meet her, and morphs the orca.
<Oh, cool. Yeah, this is like a bear. A friendlier bear. In the ocean. And...> He kicks his tail and moves out a little farther from the shore, then circles back. <Happy. I'm a happy ocean bear. Who wants to play?>
<Yay, a happy morph!> says Andi, and she flutters out to sit on Bella's back with Charlie on her foot. They demorph and slide into the water.
Andi's an orca very quickly; she gets the colors first, then smooths out into a mini-whale and then grows. <I like this morph! Best morph. I'm gonna see how high I can jump!> she says, and then she races away and dives and leaps and splashes.
<We are here to ->
<Lighten uuuuuup!>
<Ooh,> says Robin. <I like this morph. I like it, I like it, I like it.>
She bumps playfully into Ethan.
<Race you!>
And he powers out into the ocean, clicking happily.
Charlie is quiet. But he tries a jump, too.
The directional pull of the distress signal gets clearer and steadier as he goes.
Eventually, they reach a point where it mostly says down.
<All right, time to dive!>
Until -
<So I guess that's what a Dome ship is,> says Trouble.
It's a dome. Slightly tilted, resting on the ocean floor, a huge bed of blue-green grass under a shimmering transparent hemisphere that looks like it might possibly be a force field. Their whole group of orcas could fit in it just fine with room to swim and play, and considering the size of orcas, that's saying something.
Bella approaches the Dome. <Hello?> she says, aiming at contained Andalites, whoever they may be.
<Who is there?> demands the thoughtspeech voice from the recording. The recording itself cuts off abruptly.
<A bunch of humans,> says Trouble. He circles the dome, looking for an entrance. <My name's Trouble, what's yours?>
<...Humans? Down here? Humans are a terrestrial species.>
<We're morph-capable humans,> says Bella. <I'm Bella, and besides me and Trouble there's Andi, Charlie, Robin, and Ethan. What's your name?>
<Nice to meet you,> says Trouble. <So is there another door I'm not seeing? Because we don't have infinite air here, and if we try to come in that hatch we are not gonna fit.>
<There is not another door. I can get out if I morph a sea creature. I stunned and acquired one. Is there a safe place to go?>
<The beach was deserted when we left,> Bella says. <Can Andalites swim or do you have a small sea creature that will be able to get close to shore?>