Condoms were originally made of animal intestines or linen.
347
Poon Lim survived 133 days alone on a raft at sea by fishing, drinking bird blood, and killing a shark with a jug of water.
21
"Fish odor syndrome" is a rare genetic disorder that causes people to smell like rotten fish.
5
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17