List of mangrove ecoregions

This is a list of mangrove ecoregions ordered according to whether they lie in the Afrotropical, Australasian, Indomalayan, or Neotropical realms of the world. Mangrove estuaries such as those found in the Sundarbans of southwestern Bangladesh are rich productive ecosystems which serve as spawning grounds and nurseries for shrimp, crabs, and many fish species, a richness which is lost if the area is cleared and converted to ponds for shrimp farming or rice paddies.