The largest earthworm on record was found in South Africa and measured 22 feet.
151
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Nicole Kidman is scared of butterflies.
65
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79