Skagerrak
Skagerrak, a strait in northern Europe forming part of the link between the North Sea and the Baltic Sea. It lies chiefly between Denmark and Norway and measures about 75 miles (120 km) in width at most points; its eastern waters touch the coast of Sweden. On the southeast another strait, the Kattegat, continues the connection to the Baltic Sea. The Skagerrak is relatively shallow near the Danish coast but reaches depths of 2,000 feet (600 m) or more near Norway. The strait is extensively used for shipping and fishing. The main ports are Oslo and Kristiansand in Norway.