The 15 acres (6.1 ha) island makes Mamutik the smallest of the park. Despite being the smallest, the island offers some good beaches and coral reefs. It also has a jetty, a 3-bedroom resthouse for rent, and staff quarters for Rangers station. Facilities include changing rooms, toilets, picnic shelters, tables and barbecue pits. Fresh water and electricity are available. Mamutik would be an ideal venue to get away from it all. The corals to the north-eastern tip of the island are quite interesting. The beach is rocky and swimmers must be careful of sea urchins that exist in large numbers beside the corals and rocks.