Mar del Norte, or the North Sea, is a marginal sea of the Atlantic Ocean located between Great Britain, Norway, Denmark, and Germany. It is known for its rich fishing grounds and significant oil and gas reserves. The sea plays a crucial role in maritime trade and transportation in northern Europe. The North Sea is characterized by its shallow waters, with an average depth of about 95 meters. It is home to various marine species, including fish like cod and herring. The sea also experiences strong tides and currents, making it an important area for shipping and naval activities.