Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Sharks, like other fish, have their reproductive organs in their chests.
248
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
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
Penguins have a gland above their eye that turns saltwater into freshwater.
12
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2