marine ecoregions
   (Biogeographic realm) Tropical Atlantic
     12 (Biogeographic province) Tropical Northwestern Atlantic
     13 (Biogeographic province) North Brazil Shelf
     14 (Biogeographic province) Tropical Southwestern Atlantic
     15 (Biogeographic province) St. Helena and Ascension Islands
     16 (Biogeographic province) West African Transition
     17 (Biogeographic province) Gulf of Guinea