From what I understand, it is the skin that suffers, not the ability to breathe. Their skin starts to suffer in fresh water and can deteriorate like skin cancer.

Hm, yeah school system. I have fought like hell the "guess and go" system of reading since my daughter started first grade. She can't hardly solve a word problem now in middle school, because she doesn't actually read the problem, she skims it. If I slow her down and make her read it word for word, she'll get it. But they have been taught that if you can't read a word, just skip it. Pitiful!!! Why is this relevant? These are our future bios and politicians!!