It also holds about 96.5% of all Earth’s water – that’s a volume of 320 million cubic miles! The globe illustration shows blue spheres representing relative amounts of Earth’s water in comparison to the size of the Earth. Are you surprised that these water spheres look so small? Water is never sitting still. Thanks to the water cycle, our planet’s water supply is constantly moving from one place to another and from one form to another.

SOURCE: https://www.usgs.gov/programs/cmhrp/news/top-10-things-you-didnt-know-about-ocean