Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Parrot parents "name" their children with a signature call.
112
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5
Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
47
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9