The 10 Best Snorkeling Destinations in the Caribbean

St John While two thirds of St John is part of the Virgin Islands National Park, 40 percent of the park itself is actually underwater. That means pristine water and unparalleled sea life, from green sea turtles on Maho Bay to the tube sponges of Francis Bay. Of course, the centerpiece is the Underwater Trail at Trunk Bay, which follows the west side of Trunk Bay Cay for about 300 feet.