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, …

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 percent of 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 …

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 …

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 ...

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

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 …

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 Atlantic Ocean, the Pacific Ocean, …

Jul 28, 2023 · Understanding the ocean and its relationship to weather is critical as more than half of the world's population lives within 60 miles (100 km) of the ocean. The ocean's ability to absorb, store, …

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 …