Île de Sein

Île-de-Sein
Enez-Sun
Close-up of the island
Location of Île-de-Sein
Île-de-Sein
Île-de-Sein
Coordinates: 48°02′12″N 4°50′58″W / 48.0367°N 4.8494°W / 48.0367; -4.8494
CountryFrance
RegionBrittany
DepartmentFinistère
ArrondissementQuimper
CantonDouarnenez
Government
  Mayor (20202026) Didier Fouquet
Area
1
0.58 km2 (0.22 sq mi)
Population
 (2019)
260
  Density450/km2 (1,200/sq mi)
Time zoneUTC+01:00 (CET)
  Summer (DST)UTC+02:00 (CEST)
INSEE/Postal code
29083 /29990
Elevation0–9 m (0–30 ft)
1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

The Île de Sein [il sɛ̃] is a Breton island in the Atlantic Ocean, off Finistère, eight kilometres from the Pointe du Raz (raz meaning "water current"), from which it is separated by the Raz de Sein. Its Breton name is Enez-Sun. The island, with its neighbouring islets, forms the commune of Île-de-Sein in the Finistère department of Brittany in north-western France. Inhabitants of Île-de-Sein are called in French Sénans.

Lying on the sea routes going south from the English Channel, Sein is well known for the dangers of its waters, the Chaussée de Sein, a vast zone of reefs stretching more than 30 miles from east to west, requiring numerous lighthouses, beacons, and buoys. The lighthouses near the reef include Ar Men, La Vieille and Tévennec.