marine ecoregions (Biogeographic realm) Tropical Atlantic (Biogeographic province) Tropical Southwestern Atlantic 73 (Marine ecoregion) Sao Pedro and Sao Paulo Islands 74 (Marine ecoregion) Fernando de Naronha and Atoll das Rocas 75 (Marine ecoregion) Northeastern Brazil 76 (Marine ecoregion) Eastern Brazil 77 (Marine ecoregion) Trindade and Martin Vaz Islands