Hot water can freeze faster than cold water.
181
Water is actually naturally blue.
48
Sound travels about 4 times faster in water than in air.
408
If you get water flowing fast enough, it can cut metal.
354
Penguins have a gland above their eye that turns saltwater into freshwater.
12
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24