It's also worth noting, just as a fun fact, that sperm whales aren't so-named because of their resemblance with sperm (though honestly, there is one). Back when the oil industry was pretty much just whaling, sailors would go out in search of sperm whales to gather the waxy oil that they store in their giant, square heads. The whales themselves seem to use their spermaceti oil to create loud clicks for use in echolocation and communication. Humans liked it because the purified oil could be burned and stayed liquid even in very cold weather. So sailors would kill a sperm whale, hack off its head, and pull it on board. There they would crack open the head to reveal the spermaceti, which with its whitish hue and semi-liquid appearance, looked to seamen like semen. So they called it spermaceti: "sperma" meaning semen in Latin, and "ceti" meaning whale. Why the sailors thought a whale's semen was stored in its head is still a mystery.