 The waters surrounding the islands are known as a coral diversity hotspot hosting 46 of the 72 known genera of "Scleractina" found in the Philippines.Visitor facilities are provided at Kopiat Island, including resorts and cottages with comfort rooms and dressing rooms.The Mabini portion of Davao Gulf is a feeding ground to 11 species of cetaceans such as sperm whales, killer whales and bottle-nosed dolphins.