While soft-shelled turtles breathe air, they spend the vast majority of their lives in the water. Even when the pools and lakes they call home dry up, they will stick their heads beneath the surface of a puddle, sometimes for hours on end, a habit that has baffled scientists for years. Thanks to a report released today in the Journal of Experimental Biology, researchers are no longer stumped. They are, however, kind of grossed out, as the study shows that when they dunk their heads, it’s because they’re urinating into the water through their mouths.
http://www.geekosystem.com/turtle-pees-through-mouth/
