The terms "the ocean" or "the sea" used without specification refer to the interconnected body of salt water covering the majority of Earth's surface, i.e., the world ocean. [9][10] It includes the Pacific, …

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May 27, 2025 · This article is also available in Spanish. The ocean covers 70 percent of Earth 's surface. It contains about 1.35 billion cubic kilometers (324 million cubic miles) of water, which is about 97 …

Apr 25, 2026 · 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, Southern, and …

Your top ocean questions, answered. Explore OCEARCH Ocean Facts to learn how seas regulate climate, generate oxygen, support biodiversity, and sustain us all.

Oct 28, 2025 · The ocean is essential to life on Earth. It covers more than 70% of our planet and holds 96.5% of all water. It regulates our climate, generates half of Earth's oxygen, and is home to millions …

Dive deep into the mysteries of marine life, the impact of human activity on Earth’s oceans, and the efforts to protect these vital ecosystems from threats including pollution, overfishing, and ...

Map of the World's Oceans Map of Earth's Five Oceans: Although there is only one global ocean, geographers have divided it into five major regions (which are also called "oceans"). They are: the …

The ocean holds great cultural and economic value and hosts numerous ecosystems that support life on Earth and produce valuable resources. USGS science focuses on improved understanding of many …

Ocean Worlds Water in the Solar System and Beyond The story of oceans is the story of life. Oceans define our home planet, covering the majority of Earth’s surface and driving the water cycle that …