El Puerto's Salt Marshes are wetlands originated by man work searching for an ancestral resource such as salt, but hey are also spaces full of biodiversity, a refuge and breeding places for numerous birds typical of wetlands and marshes. The osprey, flamingos and a great variety of shorebirds form part of the valuable natural and ethnographic heritage treasured by the "Salina de la Tapa and Marivélez" or the "Salina de Santa María"
