http://en.wikipedia.org/wiki/File:Earth_water_distribution.svg http://en.wikipedia.org/wiki/File:Earth_water_distribution.s... Here is an image showing just th

http://en.wikipedia.org/wiki/File:Earth_water_distribution.svg http://en.wikipedia.org/wiki/File:Earth_water_distribution.s... Here is an image showing just that, in a cubic format. The sphere of ocean water would have a radius of 684 kilometers, while the remaining water, most of which is glaciers and groundwater, would form a sphere of 227 km radius.