Formentera is the smaller and more southerly island of the Pine Islands group (comprising Ibiza and Formentera, as well as various small islets) in the Balearic Islands, Spain. Formentera is 19 km (12 miles) long and is located about 6 km (4 miles) south of Ibiza in the Mediterranean Sea.
North of Formentera is the small island of Illa de S'Espalmador. S'Espalmador is separated from Formentera by a shallow sandbar, and during low tide, it is possible for one to wade between the two islands. This area is a popular stopping point for those in yachts heading between Ibiza and Formentera.
Formentera comprises one municipality, also called Formentera, with a population of 9,962 (as at 1 January 2010). Formentera is renowned across Europe for many pristine white beaches where nude sunbathing is allowed (on most beaches).
The island was formerly reachable only by boat from Ibiza, making it the quieter of the two islands, but in recent years regular passenger service from the Spanish mainland has increased tourism.
A local dialect of Catalan is spoken in Formentera. While the official languages are Catalan and Spanish, English, Italian, and German can also be heard extensively in the summer due to mass tourism. It is site of the Ibiza Ultra Team multi-discipline endurance event.