Ría de Villaviciosa. 07/01/11; Asturias; 1,263 ha; 43º31'12"N 005º23'23"W. Nature Reserve, Natura 2000 (SPA, SIC). One of the best-conserved estuaries on the Cantabrian coast, containing a wide diversity of species of flora and fauna, including internationally threatened species such as the European Eel Anguilla anguilla, Aquatic Warbler Acrocephalus paludicola and the Gold-striped Salamander Chioglossa lusitanica. Amongst the different habitat types, four wetland types are listed as European priority habitats including coastal lagoons and dunes as well as Atlantic heaths. The site is an important wintering and staging area for numerous species of waterbirds. It is located along the pilgrim's trail "Camino de Santiago" and is of high cultural and archeological as well as touristic importance. Bird observatories, environmental education opportunities and an interpretation centre exist. Water contamination and invasive species threaten the site. Ramsar Site number: 2037. Most recent RIS information: 2012.