Living underwater

"More people have been in space than have lived underwater to do science." When I first read this line, the sense of irony didn't escape me. After all, nearly three-fourths of our planet's surface is covered by water bodies and yet there is so little (relatively speaking) that we know about the ecology and life forms underneath them vis-a-vis what we know about what is around us in space even light years away!

Given below is a link to an article that explains more about human attempts to live underwater in an attempt to understand more about the environment there and its impact on us.

http://www.bbc.com/future/story/20140411-i-have-lived-underwater

Quite interesting, isn't it!