As The New Yorker puts it: “Greenland sharks are among nature’s least elegant inventions. Lumpish, with stunted pectoral fins that they use for ponderously slow swimming in cold and dark Arctic waters, they have blunt snouts and gaping mouths that give them an unfortunate, dull-witted appearance.” And they can get incredibly old. Despite its poisonous meat, in Iceland Hákarl is even considered a local delicacy.