Kuzey Denizi, also known as the North Sea, is a marginal sea of the Atlantic Ocean located between the United Kingdom, Norway, Denmark, Germany, and the Netherlands. It is known for its rich marine life and significant fishing grounds, making it an important area for the fishing industry. The sea is also notable for its oil and natural gas reserves, which have been extensively explored and extracted since the 1960s. Additionally, the North Sea is a key shipping route, facilitating trade and transportation between various European countries.