Diving in the Virgin Islands where underwater visibility may reach more than 100 feet is always a thrill. The Virgin Islands are volcanic outcrops of a vast underwater plateau that stretches for more than 70 miles where the Caribbean meets the Atlantic. St Thomas, St John, Tortola, Virgin Gorda, Jost Van Dyke, Anegada, and more than 60 other smaller islands form a protective ring around the crystal-clear aquamarine water known as the Sir Francis Drake Channel. They create a sheltered paradise of secluded coves, calm shores and sweeping beaches. This extraordinary setting provides outstanding underwater visibility, healthy coral and a wide variety of exotic dive sites, with water temperatures between 79 and 83 degrees Fahrenheit year-round. Countless reefs, towering coral pinnacles, underwater caves, lava tunnels, canyons, massive boulders and grottoes are strewn across this vast submerged shelf, creating a choice of dive sites that range from shallows for the novice snorkeller to dramatic sea caverns and extraordinary shipwrecks for the experienced scuba diver.