Mortrim:
The mortrim of planet Korho have a neat ability. When they take air in through their nose-like appendages, instead of the air flowing into their lungs, it fills a pocket under their shells. When the pocket is full of air, they can float on water, and the air slowly expels itself.
Inhale air into my shell,
And I can float all day.
The water’s shoal is where I’m found,
Lounging my life away.
To watch the fish swim underneath,
Delights me to my core.
And then with just one lazy bite,
I am fed, and they swim no more!