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  1. Ocean - Wikipedia

    Yet, the ocean faces many environmental threats, such as marine pollution, overfishing, and the effects of climate change. Those effects include ocean warming, ocean acidification and sea …

  2. Ocean | Definition, Distribution, Map, Formation, & Facts | Britannica

    Oct 9, 2025 · Ocean, continuous body of salt water held in enormous basins on Earth’s surface. There is one ‘world ocean,’ but researchers often separate it into the Pacific, Atlantic, Indian, …

  3. Oceans—facts and information | National Geographic

    The ocean is a continuous body of salt water that covers more than 70 percent of the Earth's surface. Ocean currents govern the world's weather and churn a kaleidoscope of life.

  4. All About the Ocean - National Geographic Society

    May 27, 2025 · The ocean offers a wealth of fishing and whaling resources, but these resources are threatened. People have harvested so much fish and marine life for food and other …

  5. Ocean Facts - Oceanic Society

    Jul 11, 2025 · Learn about the ocean and its inhabitants, from sea turtles to whales. The ocean is essential to life on Earth. It covers more than 70% of our planet and holds 96.5% of all water. It …

  6. Ocean - NASA Earthdata

    The ocean covers more than 70% of Earth’s surface and contains 97% of the planet’s water. This vast, critical reservoir supports a abundance of life and helps regulate Earth’s climate.

  7. Know Your Ocean | Ocean Today - National Oceanic and …

    Understanding basic facts about the ocean is important since it affects everything from our atmosphere to our ecosystems. By knowing your ocean, you are better prepared to help …

  8. Ocean - New World Encyclopedia

    Five oceanic divisions are usually reckoned: Pacific, Atlantic, Indian, Arctic, and Southern; the last two listed are sometimes consolidated into the first three. An ocean (from Ωκεανός, Okeanos …

  9. OCEAN | definition in the Cambridge English Dictionary

    OCEAN meaning: 1. a very large area of sea: 2. used in the name of each of the world's five main areas of sea…. Learn more.

  10. Ocean | U.S. Geological Survey - USGS.gov

    The seven named oceans and many seas, bays, and estuaries, are all interdependent and connected as one global ocean. The importance of the ocean to our everyday lives is …