Water is actually naturally blue.
48
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
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
If you get water flowing fast enough, it can cut metal.
354
Sound travels about 4 times faster in water than in air.
408
There are about 100,000 bacteria in one litre of drinking water.
63
The Kangaroo Rat can last longer without water than a camel.
233