The lagoon is home to many coastal birds and many rare species breed here, others over-winter here and it also provides rest and replenishment for migratory birds. Apart from more than 200 species of birds that visit the park regularly, there are over 300 species of molluscs, 11 amphibians and 15 reptiles. This National Park in Ria Formosa was formed in 1987. It covers approximately 18,000 hectares and is made of 5 barrier islands and 2 peninsulas that enclose a system of tidal lagoons.
From East to West, a succession of beautiful places like Faro Islands, Barreta, Culatra, Armona and Tavira, with long sand coasts. The Culatra Island forms a barrier between the lagoon and Atlantic Ocean.