(July 26, 2010 at 5:40 pm)Skeptisma Wrote:(July 26, 2010 at 5:33 pm)In This Mind Wrote: How then do the salt water dwelling mammals breathe?
I sincerely hope that wasn't a serious question.
It is.
There are mammals that live in salt water. They must surface to breath air.
Considering all the problems these same mammals would have when exposed to fresh water (such as their skin coming off), how would these mammals survive if the fresh water were to sit atop the salt water?