marine ecoregions
   (Biogeographic realm) Tropical Atlantic
     (Biogeographic province) Tropical Northwestern Atlantic
       62 (Marine ecoregion) Bermuda
       63 (Marine ecoregion) Bahamian
       64 (Marine ecoregion) Eastern Caribbean
       65 (Marine ecoregion) Greater Antilles
       66 (Marine ecoregion) Southern Caribbean
       67 (Marine ecoregion) Southwestern Caribbean
       68 (Marine ecoregion) Western Caribbean
       69 (Marine ecoregion) Southern Gulf of Mexico
       70 (Marine ecoregion) Floridian