JDMB bills itself as an "island in time," and that's not a vacant marketing slogan. Where else in South Florida are you going to find a two-mile expanse of beach with no condos on it? With 438 acres of protected wildlife refuge? With a beach that's wider than a football field is long and sans those neon-lit seawalls? JDMB gets even better once you go underwater, where snorkelers can see barracudas, nurse sharks, sea turtles, Florida lobsters, and sea anemones that are all attracted to the limestone rock reefs that pepper this throwback of a beach. And just like the old days, the hours are long (8 a.m. till sundown) and the admission fee is small (a measly $4 to park). The only problem: Every other snorkeler in the area knows about this place too. But if you can get away during a weekday, you'll have this huge underwater menagerie all to yourself.