Sort of. When I visited Florida, I snorkeled in a small river north of Tampa that includes a warm-springs refuge that manatees use during the cold months. But humans are allowed to swim there too- we're just not allowed to approach the manatees or interact with them in any way, for the manatees' protection. And the manatees can come and go as they wish. (But I went in June, when the manatees were off someplace else having fun in all the warm weather...)
Have you seen any famous rock performers more than once?