Sound travels about 4 times faster in water than in air.
408
If you get water flowing fast enough, it can cut metal.
354
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
A person can live without food for about a month, but only about a week without water.
156
Water is actually naturally blue.
48
Pumice is the only rock that floats on water.
14
Spain's capital Madrid means "place of abundant water".
29