Turtle Tomb

From the left wall of Turtle Cavern a tunnel just wide enough for one diver leads into a cave that opens into several side passages, some of them dead ends. A thick layer of silt covers the floor, and besides turtles, Divezone reports the skeletons of a dolphin and a marlin. Sources describe it as full cave-diving territory that needs special equipment, and both Sipadan.com and Wannadive list divemaster level.