These wolf fish, nestled deep beneath the water off the coast of Maine, can grow up to 5 feet long. And those teeth are strong enough to bust open shellfish - or your arm. Want to see more toothy fish?

These are just a few images of bizarre aquatic life featured in National Geographic. Visit their gallery to find out more about these fish (and one squid), and to see more pictures. (Thanks, Marilyn Terrell!)

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Wolf fish mates By Jonathan Bird

Fangtooth Fish By David Wrobel

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Closeup of the wolf fish By Espen Rekdal

Frilled shark via Getty Images

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Vampire squid By Kim Reisenbichler