DROWNING.
Although they don't like water, cats can swim and probably won't drown unless the water is rough or they tire. You can resuscitate a drowned cat by holding it upside down by the hind legs and vigorously swinging it to and fro between your legs. This should remove the water from its lungs and stimulate its breathing. If the cat does not start breathing you may have to give it artificial respiration and/or heart massage.