Crystal clear waters beckon from the south part of this tranquil Caribbean islet, a hundred miles south of Havana and known for its17 miles of stunning white sand beaches, mangrove forests and scuba diving to the black coral reef. The largest of the 300 keys and islets in Los Canarreos Archipelago, waters in the north are much cloudier. Cayo Largo also offers excellent deep sea fishing. Rent a jeep to explore the islet’s few roads and paths or trot across coral sand beaches on horseback.