A big draw for kids, this stellar spot has four huge saltwater tanks brimming with sea life, from coral to stingrays to spiny lobsters, plus a sea turtle rehabilitation center. Nocturnal walks in spring and early summer, when staffers lead a quest to find nesting female turtles coming ashore to lay eggs, are popular; so are the hatching releases in August and September. (Call to purchase tickets in advance as there are very limited spaces.) This is one of only a handful of centers that offer this. There is also a nature trail and butterfly garden, a ¼-mile boardwalk, and a 40-foot observation tower, where you're likely to see brown pelicans and osprey.