* The North Sea, located between the United Kingdom, Norway, Denmark, Germany, the Netherlands, Belgium, and France.
* The Baltic Sea, located between Denmark, Germany, Poland, Lithuania, Latvia, Estonia, Russia, Finland, and Sweden.
* The Mediterranean Sea, located between Europe, Africa, and Asia.
* The Caribbean Sea, located between North America, Central America, and South America.
* The Gulf of Mexico, located between the United States and Mexico.
* The Labrador Sea, located between Canada and Greenland.
* The Norwegian Sea, located between Norway, Iceland, and the Greenland Sea.
* The Greenland Sea, located between Greenland, Iceland, and the Arctic Ocean.
* The Barents Sea, located between Norway, Russia, and the Arctic Ocean.
* The White Sea, located between Russia and the Barents Sea.