The Greenland Shark lives farther North than any other species, and has evolved a kind of biological antifreeze to help it survive the frigid temperatures. Perhaps even more impressive is its dietary diversity. The Greenland eats fish and seals like other sharks, but scientists have also found the remains of polar bears, horses, and other big game in their stomachs. In one instance, an entire reindeer carcass was found! The extent to which the Greenland hunts or scavenges these idiosyncratic meals is still up for debate. Still, it's pretty cool to think of that old adage, "I'm hungry enough to eat a horse." Greenlands apparently take that literally.