This tour offers you the unique experience to view the island's best features above and below the water—without getting wet. Get an up-close view of the underwater world aboard one of the world's largest semi-submarines, the Nautilus. Glide over Cheeseburger Reef and shipwrecks of the Cali and Balboa onboard the Nautilus. Once on land, your tour includes stops at the Seven Mile Public Beach and a unique town called Hell.