Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9
Sharks have been on the planet longer than trees.
14
Jellyfish as a species are actually older than dinosaurs and sharks.
383
Unsinkable Sam (nickname of a German ship's cat) who served on 3 warships, one German, two British, all sank in action. The cat survived each sinking, floating away on wooden planks to rescue.
19
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6