Gulf of Bothnia

The Gulf of Bothnia is the northernmost arm of the Baltic Sea. It is situated between Finland's west coast and Sweden's east coast. In the south of the gulf lie the Åland Islands, between the Sea of Åland and the Archipelago Sea. Gulf of Bothnia is often divided into three parts which are called in Finnish language: 

Perämeri, northest part
Merenkurkku 
Selkämeri, southest part

Other websites

Bothnia
Category:Baltic Sea
Category:Bodies of water of Finland
Category:Bodies of water of Sweden