Do manatees sleep?
Asked in Manatees
Do manatees sleep with their eyes open or closed?
Manatees have a nictitating membrane (like an alligator has) which protects its eyes. Manatees will close their eyes when sleeping. They hover or lay on the bottom and when they need a breath they will rise to the surface, take a breath and then settle back down to the bottom without ever waking up.