300 Manatees Shut Down Florida Hot Spring for Slow, Gentle Sea Cow Rager Jay Hathaway · 02/05/15 05:05PM Hundreds of manatees, the Andrew W.K.s of the sea, turned up at a Florida hot spring this week in such great numbers that the water had to be closed to humans for more than a day while they got their mellow, listless sea cow party on.