Blue Springs State Park is probably one of my favorites for many reasons. It's only about an hour from Orlando, it has a great big lawn area for laying around or a picnic, a trail walk, a historic house museum, and of course, manatees! You can rent tubes or go snorkeling, free diving, or scuba diving here and you just might get to swim with a manatee or two. During the winter, though, swimming is not allowed as too many Floridian manatees come here in search of refuge from the freezing ocean waters. The springs are a constant 70 degrees year-round.