![How Deep Is the Ocean?](https://ic-cdn.flipboard.com/hswstatic.com/729476e4338af59d98b98d74cf2d91893d5e5807/_xlarge.jpeg)
To know the ocean is to know some mind-boggling numbers. About 71 percent of Earth's surface is covered by seawater. All that liquid takes up more …
* View the article originally published here. ** More curations: Al Cannistra at San Antonio ONE here.