The rest of the park is a naturalist's dream made up of mangrove lagoons, salt marshes and tropical woodland and home to sea turtles, manatees, Florida Scrub Jays, pink shrimp, alligators, Turkey Vultures, blue crabs and thousands of other species including 14 that are endangered. In June and July it's possible to participate in a Turtle Watch Program at Playalinda Beach. This is the nesting season when female turtles make their tortuously slow trip from the sea up the beach to lay their eggs. The evening watches last up to three hours and you have to book your place in advance. Other attractions include a hundred Timucuan mounds - heaps of discarded shells that are some of the few remnants of the land's Indian inhabitants.