Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
The elephant brain weighs about 6,000g.
274