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The Toothy Sea Wolf

Preview Despite its fearsome look, the Atlantic wolffish (or sea wolf) isn't a danger to humans, largely preying on whelks, crabs, and sea urchins.
(Flickr user Kamil PorembiƄski)
With gnarled teeth and a perpetual frown, the sea wolf is a creature out of our nightmares! But despite its fearsome look, it isn't a danger to humans, largely preying on whelks, crabs, and sea urchins. Because Atlantic wolffish (Anarhichas lupus) live in the cold waters of the northern Atlantic, they produce a natural antifreeze that keeps their blood from freezing.