North Sea Channel
The North Sea-Channel area comprises the marine area of the North Sea and the passages to the Baltic Sea (Skagerrak and Kattegat), to the Atlantic (English Channel) and to the Norwegian Sea.
The area is bounded by the Orkney Islands and east coasts of England and Scotland to the west and the northern and central European mainland to the east and south, including Norway, Denmark, Germany, the Netherlands, Belgium, and France.
It is more than 970 kilometres (600 mi) long and 580 kilometres (360 mi) wide, with an area of 750,000 square kilometres (290,000 sq mi) and a volume of 94,000 cubic kilometres (23,000 cu mi). Around the edges of the North Sea are sizeable islands and archipelagos, including Shetland, Orkney, and the Frisian Islands.