Has anyone seen manatees there recently (May 2021)? I know the weather and sea temps are rising, so wondering if it is even worth giving it a try to see them?

I have seen manatees. The warmer it gets will make the manatees harder to see. Check along the edges and in mangroves.

Just went today and none there. Will be rare May through November.

Was just there a little less then a week ago an didn't see any

We were there the end of April and saw a couple