In spite of “Globull warming”, the oceans around that area got viciously cold a few years ago.
Some very smart manatees were able to survive by hanging around the OUTFLOW pipe, which was warmer.
Smart Manatees.
The place to hang out is where the current goes AWAY from the Nuclear Power Plant.
Manatees have very little body fat. They hang near power plant outflow even when it’s a little cool.