A very large area of coastal waters off western Iceland, containing thousands of islands and islets. The bay is rather shallow and there are extensive intertidal areas adjoining the heavily indented coastline. Habitat also includes marshes and grassland on some of the islands. Land-uses include seaweed-harvesting, exploitation of seals (Phocidae), eider husbandry (Somateria mollissima), traditional harvesting of eggs of Rissa tridactyla, Sterna paradisaea and Larus marinus, chicks of Phalacrocorax aristotelis and P. carbo, and adults of Fratercula arctica, and net-fishing for lumpfish Cyclopterus lumpus.
The site supports huge numbers of breeding seabirds; Fulmarus glacialis is common but does not meet criteria.
BirdLife International (2019) Important Bird Areas factsheet: Breidafjördur. Downloaded from http://www.birdlife.org on 20/10/2019.