You'd think that animals that lived in water wouldn't have to drink it -- but some fish do. Learn all about how different kinds of fish get the fresh water that they need to survive. ----------...
========== All living things on Earth need water, because
the chemical reactions that make life possible happen in an aqueous solution. Which means us land animals have to drink
it to keep it inside of us all the time. But… what about fish? It seems like since they’re always in the
aqueous solution of whatever body of water they’re swimming around in, they wouldn’t
need to actually drink the stuff. But it turns out that some fish actually do
need to drink. And others do not. It depends on the fish, and what kind of neighborhood
it lives in. Water, you should know first of all, is really
into finding a balance. If you have a membrane that water can pass
through, and there are different concentrations of salt on each side, then the water will
always flow tow...