The ocean is a huge body of saltwater that covers about 71 percent of Earth’s surface. The planet has one global ocean, though oceanographers and the countries of the world have traditionally divided it into four distinct regions: the Pacific, Atlantic, Indian, and Arctic oceans. Beginning in the 20th century, some oceanographers labeled the seas around Antarctica the Southern Ocean, and in 2021 National Geographic officially recognized this fifth ocean.
5 - 8
Biology, Ecology, Conservation, Earth Science, Oceanography
Open ocean water churning into waves
Photograph by Getty Images
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October 19, 2023
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