The Kattegat is a sea of roughly 24,000 km2 bounded by the Skagerrak in the north, Jutland in the west, the Danish Straits and Sjaelland in the south and the Swedish provinces of Bohuslän, Västergötla
Älvsborg at Gothenburg, a sea fortress in the Kattegat
Grenen in Denmark is important for bird migrations and is a protected area.
Bjärekusten Nature Reserve with Hovs Hallar in Sweden.
There are several offshore windfarms in the Kattegat.
Grenen is a long sandbar spit at Skagen Odde, northeast of the town of Skagen.
Grenen beach, 2006
Grenen seen from the south.
The tip of Grenen, with the Skagerrak on the left and Kattegat on the right