Sound travels about 4 times faster in water than in air.
408
A portion of the water you drink has already been drunk by someone else, maybe several times over.
170
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
Water is actually naturally blue.
48
The water of the Antarctica is so cold that nothing can rot there.
334
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219