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While Earth's surface is mostly water, Earth is nearly all rock. Just 0.5% of the planet by weight is water. More than 70% of the surface area of the planet today is covered by water; The other 30% is land.

en.wikipedia.org/wiki/Water_distribution_on_Earth

The water distribution on earth shows that most water in the Earth's atmosphere and crust ... Typically, fresh water is defined as water with a salinity of less than 1 percent that of the oceans - i.e. below around 0.35‰. Water with a salinity ...

water.usgs.gov/edu/earthhowmuch.html

Dec 2, 2016 ... But just how much water exists on, in, and above our planet? About 71 percent of the Earth's surface is water-covered, and the oceans hold ...

phys.org/news/2014-12-percent-earth.html

Dec 2, 2014 ... The Earth is often compared to a majestic blue marble, especially by those privileged few who have gazed upon it from orbit. This is due to the ...

www.universetoday.com/65588/what-percent-of-earth-is-water

Dec 1, 2014 ... The Earth is often compared to a majestic blue marble, especially by those privileged few who have gazed upon it from orbit. This is due to the ...

www.nationalgeographic.org/media/earths-fresh-water

Nov 12, 2012 ... It is unexpected and somewhat inconceivable that less than three percent of Earth's water is fresh water. According to the U.S. Geological ...

www.livescience.com/29673-how-much-water-on-earth.html

Sep 9, 2010 ... All of the Earth's ocean water (middle) and freshwater (right). ... Some 72 percent of Earth is covered in water, but 97 percent of that is salty ...

www.ngwa.org/Fundamentals/teachers/Pages/information-on-earth-water.aspx

Sep 5, 2012 ... Earth is known as the "Blue Planet" because 71 percent of the Earth's surface is covered with water. Water also exists below land surface and ...

spaceplace.nasa.gov/water/en

Earth has a lot of water. It's one of the things that makes our big, blue planet so special. Learn more about Earth's water in this video! thumbnail of water poster ...

oceanservice.noaa.gov/facts/wherewater.html

The ocean holds 97 percent of the Earth's water; the remaining three percent is freshwater found in glaciers and ice, below the ground, or in rivers and lakes.