List of ecoregions (WWF)

The World Wildlife Fund (WWF) identifies terrestrial, marine, freshwater, and ecoregions:

• List of terrestrial ecoregions (WWF) 867 terrestrial ecoregions.
• List of marine ecoregions (WWF), 232 marine ecoregions of the coastal and continental shelf areas.
• List of freshwater ecoregions (WWF), 426 freshwater ecoregions.