Kattegat Strait

The Kattegat is a 30,000 km2 sea area bounded by Jutland in the west, Danish straits islands of Denmark and the Baltic Sea to the south, and Swedish provinces of Bohuslän, Västergötland, Halland, and Scania in the east. It is a shallow sea with many reefs and tricky currents, but has been improved with artificial seabed channels and a well-developed light signaling network. The Kattegat is drained by the Baltic Sea through the Danish straits and is connected to the North Sea and North Atlantic Ocean. Major cities and ports on the Kattegat include Gothenburg, Aarhus, Aalborg, Halmstad, Varberg, and Frederikshavn. The Kattegat is an important waterway, with several large rivers flowing into it, and has been a significant route for international seafaring throughout history.learn more on wikipedia