Bothnian Sea

The Bothnian Sea (Swedish: Bottenhavet; Finnish: Selkämeri) links the Bothnian Bay (also called the Bay of Bothnia) with the Baltic proper.

Together, the Bothnian Sea and Bay make up a larger geographical entity, the Gulf of Bothnia, where the Bothnian Sea is the southern part.

The surface area of the Bothnian Sea is approximately 79,000 square kilometres (30,500 sq mi).

The largest coastal towns, from south to north, are Rauma and Pori in Finland, and Gävle and Sundsvall in Sweden.

Umeå (Sweden) and Vaasa (Finland) lie in the extreme north, near Bothnian Bay.