[4] The park also includes the Parcel dos Abrolhos, where typical coral formations of the region may be seen, and the Timbebas reef opposite the city of Alcobaça.

[2] The waters are clear and there is great diversity of underwater flora and fauna, including flourishing coral formations.

[5] Charles Darwin visited the archipelago in 1830 and was impressed by the variety of species, including birds, lizards and spiders.

Frigate birds nest on the steep sides of Ilha Redonda, which is visited by loggerhead turtles for spawning in the summer.

[4] Since 2003 the park has been an outpost of the Atlantic Forest Biosphere Reserve (RBMA: Reserva de Biosfera da Mata Atlântica).