WeedWhacker
Senior Member
Approximately equivalent to five hundred million cubic miles at normal pressure and temperature.
Here's a visual:
![](https://www.metabunk.org/data/MetaMirrorCache/4a683882b6092586b1c3d6999bf6d124.jpg)
Combined image....all of the water (both saline and fresh) on the left, and all the atmosphere when accumulated into a sphere (on the right), for comparison to the size of the Earth itself.
ETA the web page: http://www.nextnature.net/author/nextnature/