I'm not aware if their movement is called this but there is aquatic locomotion, which is biologically propelled motion through liquid mediums.
Yep, the Aquatic locomotion that is the stoke of the human race has been a sloppy dog paddle as far as tactfulness goes.
Once I swam with a Manta ray. Sounds interesting, was it a manta ray? They're one of the largest rays on Earth. I really don't know they were pretty large, do you know anything else? Gerald Krefft, Australian Museum's director, described them in 1868. Interesting, how similar are rays to sharks anyway? Well, both share parts like a horn-shaped cephalic fin as well as big, forward-facing mouths. And how do these creatures move? I know on land we say we run or walk or jog, but for swimming it seems quite generic, just swimming.
Aquatic locomotion is biologically propelled motion through a liquid medium.