marine ecoregions
   (Biogeographic realm) Tropical Eastern Pacific
     (Biogeographic province) Tropical East Pacific
       164 (Marine ecoregion) Revillagigedos
       165 (Marine ecoregion) Clipperton
       166 (Marine ecoregion) Mexican Tropical Pacific
       167 (Marine ecoregion) Chiapas–Nicaragua
       168 (Marine ecoregion) Nicoya
       169 (Marine ecoregion) Cocos Islands
       170 (Marine ecoregion) Panama Bight
       171 (Marine ecoregion) Guayaquil