S´Estany d´Es Peix is a is a narrow beach with an average width of 10 metres and 1000 metres long, with an occupancy degree not too high. This is a beach almost closed next to the La Savina port, open to the sea through a very small entrance which looks like a channel from the Mediterranean Sea, unique in the Balearic Islands. It has a very gentle slope (at 80 metres from the coast there is a depth of 1,5 metres and in the centre of the bay of three metres), there is no swell, and it has a sandy ground with seaweed. This beach is used to beach small boats and to practice water sports. A lot of migratory birds come to this wetland to find some food or to hibernate. Nests are not very frequent because of the lack of vegetation in the surroundings. There are lots of seagulls and cormorans, whereas in the rest of Formentera they are unusual.