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.
Bahia
The Abrolhos archipelago in the extreme southern part of Bahia is an ecotourism attraction for diving and whale watching. Whales are frequent between July and November. This region contains one of the largest concentrations of fish, in terms of volume and variety, per square meter on the planet. There are 17 species of corals. The Whale Coast includes the municipalities of Alcobaça, Caravelas, Nova Viçosa and Mucuri and its main attraction is the Abrolhos Marine National Park.