The Maldives have a range of different habitats including deep sea, shallow coast, and reef ecosystems, fringing mangroves, wetlands and dry land. There are 187 species of coral forming the coral reefs. This area of the Indian Ocean, alone, houses 1,100 species of fish, 5 species of sea turtle, 21 species of whale and dolphin, 400 species of mollusc, and 83 species of echinoderms. The area is also populated by a number of crustacean species: 120 copepods, 15 amphipods, as well as more than 145 crab and 48 shrimp species.