The lagoon is of karstic origin and has an area of about 25 hectares. It is an important wetland that is home to numerous species of migratory and aquatic birds, such as ducks, herons and coots. It is also an important habitat for reptiles and amphibians, such as the water snake and natterjack toad. On the banks there are some recreational areas with tables, benches and barbecues where you can enjoy a picnic. There is also a bird observatory.