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.
Houtman Abrolhos
The Department of Fisheries have issued a number of licences to cultivate black-lip pearl oysters in the Abrolhos. The first recipient of a license was Abrolhos Pearls in 1996. By 2000, another license had been issued and four more applications had been received. A year later, there were 10 square kilometres licensed for the culture of pearl oysters in the Abrolhos, of which about 21% was actually in use, carrying over 210,000 shell. Six licences had been issued by 2002, and by 2007 that number had grown to eight.