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.
North Island (Houtman Abrolhos)
Reptiles recorded on North Island include Binoe's prickly gecko ("Heteronotia binoei"), the gecko "Christinus marmoratus", the Jew lizard ("Pogona barbata"), King's skink ("Egernia kingii"), the western limestone ctenotus ("Ctenotus australis"), the western worm lerista ("Lerista praepedita"), the common dwarf skink ("Menetia greyii"), and the Abrolhos bearded dragon ("Pogona minor minima"). The carpet python was reported as present on the island in very low numbers before 1960, but it has never been observed there by naturalists, and is now absent.