What the shark and your vagina have in common

Believe it or not, sharks and human vaginas share a surprising connection.Okay, this might sound like the start of a bad joke, but hear us out. There's actually a fascinating scientific fact that connects the shark and your vagina – a substance called squalene (pronounced "skwah-leen").What is this substance?About squaleneSqualene is a naturally occurring hydrocarbon, that is, a molecule made mostly of carbon and hydrogen. It's found in high concentrations in the livers of sharks, but it's