Discover Grand Turk's stunning underwater world without ever getting wet on this captivating shore excursion. Board a catamaran that ferries you to the island's only semi-submarine, then descend into its glass-windowed lower cabin and come face-to-face with the legendary Grand Turk Wall — a dramatic natural underwater cliff plunging to depths of 7,000 feet and teeming with tropical marine life. It's the perfect reef experience for the whole family, no swimsuit or snorkel gear required.