The Tehuantepec-El Manchon mangroves ecoregion (WWF ID: NT1435) covers a series of mangrove woodlands along the Pacific Ocean coast of the state of Chiapas, Mexico. The ecoregion is relatively large and continuous, with trees up to 25 meters in height. The region supports stands of a type of yellow mangrove (Rhizophora harrisonii) that normally only grown further south. The coast of Mexico here is wet - over 2,500 mm/year of rain. Four RAMSAR wetlands of international important are found in the zone, and a UNESCO Biosphere Reserve (the La Encrucijada Biosphere Reserve). Of particular importance are the wide variety of permanent and migratory birds in the area.