[1] Bothnian Bay (Swedish: Bottenviken, Finnish: Perämeri) is divided between northern Sweden and Finland.
[2] In the winter the larger islands may be accessed via ice roads.
[1] The Swedish islands in the north of the bay may be grouped into the Piteå, Luleå, Kalix and Haparanda archipelagos.
Some of the larger islands in the Piteå archipelago include: Some of the larger islands in the Luleå archipelago include:[5] Some of the larger islands in the Kalix archipelago include: The Swedish Haparanda Archipelago National Park (Swedish: Haparanda skärgårds nationalpark) lies within the Haparanda group of islands, bordering the Finnish Bothnian Bay National Park.
The Bothnian Bay National Park in the Finnish section (Finnish: Perämeren kansallispuisto, Swedish: Bottenvikens nationalpark), established in 1991, is located in the archipelago offshore from Tornio and Kemi.