Cats and dogs can hear ultrasound.
350
The Pistol Shrimp can snap its claws together to create a sound of 218 decibels, louder than as supersonic jet at full speed. It only lasts for 1 millisecond. The snapping action also creates a bubble that is greater than 5000 Kelvin, close to the surface temperature of the sun.
21
If you yelled for 8 years, 7 months and 6 days, you would have produced enough sound energy to heat one cup of coffee.
1k
Sound doesn't travel in space.
255
Pain occurs when sounds are above 130 db.
124
Sound travels about 4 times faster in water than in air.
408