The site includes working and abandoned saltpans, two lakes and several small islets. There are small areas of scrub.
This is an important site for breeding seabirds and waterbirds.
Pressure/threats to key biodiversity
The main threats are from disturbance by tourists and the poaching of Calonectris diomedea and Puffinus yelkouan chicks. Larus cachinnans is culled annually. The IBA overlaps with a Natural Area of Special Interest (Ses Salines).
National High International Partial1,500 ha of IBA covered by Natural Reserve (Ses Salines de Ibiza, Formentera e Islas des Freus, 1,500 ha). 1,640 ha of IBA covered by Ramsar Site (Salinas de Ibiza y Formentera, 1,640 ha). 1,179 ha of IBA covered by Special Protection Area (Islas de los Freus-Salinas de Ibiza y Formentera, 1,179 ha).