To celebrate World Oceans Day on June 8, the National Geographic Society decided to add a fifth ocean to its list of officially recognized oceans.
Oceans cover 71 percent of the Earth’s mass and are technically one large body of water, but oceanographers have previously divided it into four: the Atlantic, the Pacific, the Indian, and the Arctic oceans. Now, National Geographic recognizes the water that surrounds the continent of Antarctica (beyond the 60° South latitude) as the Southern Ocean.