Iroise Sea
Iroise () or the Iroise Sea (French: mer d'Iroise [iʁwɑz]; Breton: An Hirwazh) is the part of the Atlantic Ocean which stretches from the Ile de Sein to Ushant off the coast of Brittany in north-western France. It is contained within the Celtic Sea, bordering the remainder of the Celtic Sea to the north and west, and the Bay of Biscay to the south.