World Oceans Quiz

Earth has five major oceans: the Pacific Ocean (the largest, covering about 165 million sq km), the Atlantic Ocean (the second-largest, separating the Americas from Europe and Africa), the Indian Ocean (the third-largest, bounded by Africa, Asia, and Australia), the Southern Ocean (surrounding Antarctica, officially recognized by the IHO in 2000), and the Arctic Ocean (the smallest and shallowest, largely covered by sea ice). Together they form a continuous global ocean.

The World's Seas

Within and adjacent to the major oceans are numerous named seas, gulfs, and bays: the Mediterranean Sea, Caribbean Sea, Gulf of Mexico, South China Sea, Arabian Sea, Bay of Bengal, Coral Sea, Norwegian Sea, and many more. The deepest point in any ocean is the Challenger Deep in the Mariana Trench (Pacific Ocean) at approximately 11,034 meters below sea level. Ocean currents like the Gulf Stream in the Atlantic significantly influence global climate patterns. Explore more with our world seas map quiz, world islands map quiz, and world climate zones map quiz.