Ocean and sea
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. It includes the Pacific 展开

The entire ocean, containing 97% of Earth's water, spans 70.8% of Earth's surface, making it Earth's global ocean or world ocean. This makes … 展开

Salinity
Salinity is a measure of the total amounts of dissolved salts in seawater. It was originally measured via measurement of the amount of 展开

The ocean has been linked to human activity throughout history. These activities serve a wide variety of purposes, including navigation and exploration 展开

Origin of water
Scientists believe that a sizable quantity of water would have been in the material that formed Earth. Water … 展开

Color
Water cycle, weather, and rainfall
Ocean water represents the largest body of water within the global water cycle (oceans contain 97% of 展开

Life within the ocean evolved 3 billion years prior to life on land. Both the depth and the distance from shore strongly influence the biodiversity of the plants and animals present in each region. The diversity of life in the ocean is immense, including: 展开