The striking-looking fish boasts a large mouth with rows of sharp teeth, and a dorsal appendage ... It’s unclear exactly why the black sea monster had emerged from the depths.

They're actually the longest teeth in the human mouth. So what are these long, sharp teeth doing among our short, stubby ones? Well, contrary to popular belief, it's not for tearing and ripping meat.

Nicknamed the Ginsu shark after the kitchen knife that slices and dices, Cretoxyrhina ripped apart prey with a mouth full of razor-sharp, bone-shearing teeth. Evidence suggests Cretoxyrhina fed on ...