The Site is composed of two main lagoons: the Redonda lagoon, with brackish waters and access to the sea, and the Limón lagoon, which has fresh water and is surrounded by rice paddies and reed beds. The Redonda lagoon boasts extensive mangrove swamps of four species, with the red mangrove (Rhizophora mangle) being the most abundant. The Limón lagoon is surrounded by swamps, with vegetation characterised by a large number of herbaceous and palustrine plants such as Typha domingensis, Eleocharis interstincta and Gynerium sagittatum. The Site hosts five species of amphibians endemic to the Dominican Republic and is a wintering site for migratory ducks, including the lesser scaup (Aythya affinis), ring-necked duck (Aythya collaris), ruddy duck (Oxyura jamaicensis), white-cheeked pintail (Anas bahamensis) and blue-winged teal (Anas discors). The Site provides important ecosystem services such as protection against erosion, natural bio-physical filters which maintain the quality of the water draining to the coast, and sustenance for people, mainly because of the area’s fishing productivity and rice crops. The main threats are livestock farming and ranching, unsustainable fishing, and the destruction of forests surrounding the lagoons. This Site boasts various cultural records of ancient Taino civilizations.