A view of Earth with its global ocean and cloud cover, which dominate Earth's surface and hydrosphere; at Earth's polar regions, its hydrosphere forms larger areas of ice cover.

Our planet is an ocean world

Earth is the only known place with stable liquid water on its surface. The global ocean covers 70.8% of Earth's surface, making life possible.

Earth: The Ocean World

A satellite glides over Earth showcasing dramatic cloud formations and the vast expanse of space.

Why the seas stay liquid

Water vapor and CO2 act as greenhouse gases. They hold Earth near 14.76 °C, where water stays liquid at typical surface pressure.

Earth: The Ocean World

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Earth: The Ocean World | DeepSwipe