Parque Natural da Ria Formosa is a humid zone of international importance, the Ria Formosa estuary is infact a labyrinth of canals, islands, marshland and sandy beaches that extend 60 km along the Algarve coast between the beaches of Garrão and Manta Rota. This diversity of eco-systems attracts a varied range of animal life including many bird species. One of the rarest species is the purple swamphen, the symbol of their Natural Park that cannot be found in any other part of the country. Visitors who would like to admire the elegant plumage of this bird and learn everything about the protected area, should start their visit in the Marim Environmental Education Centre.