We lived in southern Florida for a couple years when I was a kid . We'd fish off the bridges down in the keys and see these manta rays playing in the sounds .
I can almost hear them ...
"Hey Ray, Let's go swimming in the 'air' !"
"Last one into the 'air' is Shark Bait !"
"Hey, looka my back flop !"
"I call this one, 'My Deep Air Dive' !"