Sharks have been around for more than 420 million years. Respect your terrifying elders by learning about them for more than just one week a year.

Here are seven weird shark facts that will make you go, "Huh, I really hate that I know that."

THE OLDEST KNOWN SHARK IS BETWEEN 272 AND 512 YEARS OLD. Greenland sharks are the oldest living vertebrate. They don't reach sexual maturity until aro
Source: BBC

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