Houtman Abrolhos
The Houtman Abrolhos is unusual in having a luxuriant and diverse living coral reef at such a high latitude. 194 species in 50 genera have been recorded there, all but two of which are tropical. This is a surprisingly high coral diversity, considering the high latitude of the reef, and the relatively low diversity of other biota. For a full list, see list of corals of the Houtman Abrolhos.
Tubbataha Reef
Over 1000 species of marine life inhabit the reef with many considered as endangered. Animal species found include manta rays, lionfish, sea turtles, clownfish, and sharks. Tubbataha has become a popular site for seasoned sport divers because of its coral "walls" where the shallow coral reef abruptly ends giving way to great depths. These "walls" are also habitats for many colonies of fish. Giant trevally (jacks), hammerhead sharks, barracudas, manta rays, palm-sized Moorish idols, napoleon wrasse, parrotfish, and moray eels live in the sanctuary. There also have been reported sightings of whale sharks and tiger sharks. Tubbataha is even home to cetaceans and the hawksbill sea turtles ("Eretmochelys imbricata") which are critically endangered species.