Tubbataha Reef is an atoll coral reef in the Sulu Sea that belongs to the Philippines. It is a marine sanctuary protected as Tubbataha Reef National Marine Park. The reef is composed of two atolls, North and South Reefs. Each reef has a single small islet that protrudes from the water. The atolls are separated by a deep channel 8 kilometers wide. Over one thousand species, including many that are endangered, can be found at on the reef. These include manta rays, lionfish, tortoises, clownfish and sharks.
