But every couple of years ... What truly makes the goblin shark so scary is its extendable jaw. It has up to 53 needle-like teeth on the top and up to 62 on the bottom. When it senses food ...

The ocean holds many bizarre deep-sea monsters. As you dive 140 meters underwater, you might see a megamouth shark. Sure, they look scary, but those 50 rows of teeth are for filtering krill.