Since divers discovered Tubbataha in the late 1970s, it has become recognized as one of the most remarkable coral reefs on our planet. The Tubbataha Reef Marine Park covers 130,028 ha, including the North and South Reefs. It is a unique example of an atoll reef with a very high density of marine species; the North Islet serving as a nesting site for birds and marine turtles.