The ocean is the body of salt water that covers approximately 70.8% of the surface of Earth and contains 97% of Earth's water. An ocean can also refer to any of the large bodies of water into which the world ocean is conventionally divided. Separate names are used to identify five different areas of the ocean: Pacific, Atlantic, Indian, Southern, and Arctic. Seawater covers approximately 361,000,000 km² of the planet. The ocean is the principal component of Earth's hydrosphere, and therefore integral to life on Earth. Acting as a huge heat reservoir, the ocean influences climate and weather patterns, the carbon cycle, and the water cycle. Oceanographers divide the ocean into different vertical and horizontal zones based on physical and biological conditions. The pelagic zone consists of the water column from surface to ocean floor throughout the open ocean. The water column is further categorized in other zones depending on depth and on how much light is present.

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There's a 'Lost City' Deep in The Ocean, And It's Unlike Anything We've Ever Seen

Deep-sea devices detect earthquakes, singing whales and explosions of a sinking ship — 50 highly-sensitive seismometers were placed on the floor of the Atlantic Ocean, in a quest to depict the Earth’s interior down to ~2,800 km depth

A Solution to Excess CO2? New Study Proposes Fertilizing the Ocean

Chemists synthesize ocean-based molecule that could fight Parkinson's

Using fungi, researchers convert ocean plastic into ingredients for drug industry

Ancient DNA Study Elucidates Lost World of Indian Ocean Giant Tortoises

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This Oft-Repeated 'Fact' About The Moon And The Ocean Is Totally False

Bilingual kids could lead in ocean environmental action

Scientists sound alarm as ocean temperatures hit new record

Marine plankton tell the long story of ocean health, and maybe human too

How climate change impacts the Indian Ocean dipole, leading to severe droughts and floods

Marine Science Goes to Space - Space and ocean scientists take a splash course in multidisciplinary science to chart our solar system’s ocean worlds

Map of ancient ocean 'dead zones' could predict future locations, impacts

Climate Warming and Rapid Ice Melt Linked to Volcanic Activity and Low Ocean Oxygen Events During Last Ice Age

Comet Collisions Could Seed Europa’s Ocean With Building Blocks of Life

Comet Collisions Could Seed Europa’s Ocean With Building Blocks of Life

Io may have an underworld magma ocean or a hot metal heart

Metabolic hack makes ocean algae more resilient to 21st century climate change

Comet Impacts Could Have Brought the Raw Ingredients for Life to Europa’s Ocean