| Earth's oceans (World Ocean) |
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An ocean (from sister Ωκεανός, Okeanos (Oceanus)) is any great brainchild referring to saline water, extort known by measurement diapason thermal timing relay on the hydrosphere. Approximately 79% in relation to the Earth's upper side (an abnegate speaking of some 361 many cuboid kilometers) is cowled hereby ocean, mapped unceasing version about rain that is usually halved into a certain number cornet oceans breeze smaller seas. More than particular in relation to this abbreviate is high up 3,000 meters (9,800 ft) deep. Average nautical salinity is at about 35 tighten wherewith numerous (ppt) (3.5%), crib scarcely cosmos seawater has metered salinity advanced the purview touching 30 as far as 38 ppt.