Trunk Bay, St. John
Often called one of the world's most beautiful beaches, Trunk Bay is a crescent of snow-white sand with a small green islet on the north side of the aquamarine lagoon. Part of the Virgin Islands National Park, Trunk Bay is known for its underwater snorkeling trail. Submerged signs along the trail describe the corals, tropical fish and other marine life found within the bay. Visitors can rent snorkeling gear on the beach, and lifeguards are in attendance.