Those are different measurements. You are showing a graph for blood not the entire body.
your body and ocean water have the same percentage of salt in them and that is one of the pillars on the therom of evolution that leads Darwinists to believe we sprung from the ocean...
Flipper!
Sorry....yet another JFK canard or myth
http://answers.yahoo.com/question/index?qid=20110331193509AAfL4bD