Iroise Sea

Iroise (/ɪˈrwɑːz/) or the Iroise Sea (French: mer d'Iroise [iʁwɑz]; Breton: An Hirwazh)^[1] 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. It is one of the most dangerous seas in Europe for sea-going vessels. In winter, there are often violent storms with huge waves. It is also one of the richest areas for marine life and was designated as one of UNESCO's biosphere reserves in 1988 and as France's first marine park in October 2007.^[2]