The North Sea is one of the world's most intensively used maritime areas. The underwater soundscape of the North Sea - ScienceDirect
It covers approximately 570,000 square kilometers (220,000 sq mi).
It links to the Atlantic through the English Channel and the Norwegian Sea, and to the Baltic Sea via the Skagerrak and Kattegat straits. Economic Pillars
It is relatively shallow, with an average depth of 95 meters (312 ft). The Dogger Bank is a notable shallow sandbank (15–30m deep) that serves as a prime fishing ground, while the Norwegian Trench is the deepest part, reaching up to 700 meters.
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