Non fiction discussion of oxygen, hypoxia, the history of diving and the limits of the human body

[David]

Published about 2004 - 2006 (?) the author provides a history of diving, the diving bell, an understanding of the bends, knowledge about the role of oxygen, free diving, death because of too much/too little oxygen, personal stories about diving the blue hole, pacific islands etc and a discussion about the physical limits of the human body.

I cannot find it in google search, amazon search or anything similar. I think its called O2 and i think it has a blue cover.