Sharks have been on the planet longer than trees.
14
A group of kittens is called a "kindle".
10
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Sharks, like other fish, have their reproductive organs in their chests.
248
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
When you shave a guinea pig it looks like a little hippo.
19
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12