Only 18 species of mammals are found in Bahrain, animals such as gazelles, desert rabbits and hedgehogs are common in the wild but the Arabian oryx was hunted to extinction on the island. Twenty-five species of amphibians and reptiles were recorded as well as 21 species of butterflies and 307 species of flora. The marine biotopes are diverse and include extensive sea grass beds and mudflats, patchy coral reefs as well as offshore islands. Sea grass beds are important foraging grounds for some threatened species such as dugongs and the green turtle. In 2003, Bahrain banned the capture of sea cows, marine turtles and dolphins within its territorial waters.