The Natural Park is situated in area that lies between southern Ibiza and northern Formentera, the natural park also includes the sea channel that separates both islands. It encompasses 2,838.44 hectares of land and some 9,012 hectares of water.
The maritime component: The sea represents 75% of the park´s total area, characterized by the ecological value of its underwater meadows of Posidonia oceanica. This underwater plant, which can only be found in the Mediterranean, helps to maintain communities of fish and other underwater organismss. At the same time it also oxygenates the water, whilst protecting beaches from wave erosion and conserving the dune systems. The Natural Park had been declared an Item of World Heritage by the UNESCO.
Vegetation: The park´s on-land areas contain examples of most of the vegetation characteristic of Ibiza and Formentera, with 178 species of plants. Represented there are Mediterranean pinewoods, coastal savins, coastal cliff vegetation and Arthrocnemetum fruticosi and halophilous plants.
Fauna: 210 differents species of birds have been registered in the park. Particularly important are it´s populations of water birds, including flamingos, the black-winged stilt, the shelduck, the snowy plover and sea birds like Audouin´s gull and the Balearic shearwater. The Formentera salt lake known as Pudent has one of the biggest concentrations of black-necked. Other animals worth mentioning in the park´s on-land areas include the lizard and several unique native species of snails and beetles.