sperm

Sperm whales can eat more than a ton of squid every day.

Sperm whales hunt and attack giant squid the size of a house.

Although the sperm DNA had changed, the damage was repaired upon contact with the female egg.

More encouragingly, freeze-dried mouse sperm that spent several months in space produced a brood of healthy pups when fertilised back on Earth.

Everything starts the day your mum's egg meets your dad's sperm.