A list of islands of Bothnian Bay would include 4,001 islands if an island is defined as an area of land more than 20 square metres (220 sq ft) that is surrounded by water. Bothnian Bay (Swedish: Bottenviken, Finnish: Perämeri) is divided between northern Sweden and Finland.The north of the bay contains a large archipelago area.The largest island is Hailuoto, further south on the Finnish side.In the winter the larger islands may be accessed via ice roads. Some of them are inhabited or have seasonal fishing villages used by people from the mainland.
