[ CAUTION: SOME LINKS NOT SUITABLE FOR YOUNGER AUDIENCES.]

Max, Pearl and Coral are all big Nathan Fillion fans. We used to get Firefly on UnderDCTV channel 42. Nathan Fillion's done more than just Captain that boat through the 'verse. His list of acting credits is, well...

[Nathan Fillion's IMDB page]

...and while he's not Jacques Cousteau, Mike Nelson, (not to be confused with Mike Nelson), 

or even the correct Private Ryan...

....he's been Malcolm Reynolds and he's better than Neil, he survived this ordeal, and that's good enough for me.

Cheers, Mr. Fillion, eh?

Now, can start working on an undersea adventure starring your passionate yet unflappable manatee sidekick, Max? Here, try this scene. 

[Diver, Nathan Fillion] swims up to Max, who's nonchalantly grazing on a huge bed of delicious sea grass, and says, "You keep eating like that, Max, and you're going to explode."

[Max] "Explode? I don't want to explode."

There's a momentary pause, and Max goes back to grazing. 

Scene fades and cuts to privately owned cargo ship being harassed by a menacing US Customs frigate.

What do you think, Nathan?  Have your people call my people.  We'll do lunch. I know this little place next to a coral reef in Belize with great sea grass and sushi so fresh you have to chase it.

Love keeps a boat in the air:

"You can learn all the math in the 'verse, but you take a boat in the air that you don't love, she'll shake you off just as sure as the turn of the worlds. Love keeps her in the air when she ought to fall down. Tells you she's hurting before she keens. Makes her a home." ~ Malcolm Reynolds