Cory's shearwater
Within a radius of around Ponta dos Rosais there is an elevated number of animal and aquatic plant species. The area is a habitat for the brown alga "Stypopodium zonale" and the red alga "Asparagopsis armata". Fish observed in the Baixa include anchovy, Atlantic bonito, Atlantic goliath grouper, bluefish, European hake, frigate tuna, longfin yellowtail, needlefish, red scorpionfish, sawfish, skipjack tuna, vadigo, and yellowmouth barracuda, among others. Common bottlenose dolphins and loggerhead sea turtles frequent the area. Marine birds including black-headed gull, common tern, Cory's shearwater, Eurasian whimbrel, great black-backed gull, Kentish plover, roseate tern, ruddy turnstone, and sanderling habitate or visit the Ponta dos Rosais area and its islets. In total, scientific researchers have identified 69 different species in the Baixa's waters, giving the area a 7.2 Margalef scale/biodiversity index-rating.