This odd-looking creature would have a good shot at winning the title of "everyone's favorite marine invertebrate," but you be the judge! Tell us what your favorite invertebrate is! This is a Cuttlefish. They are extremely intelligent, and they have a unique adaptation that makes them visually fascinating. Cuttlefish can change the color and texture of their skin in a fraction of a second. There are endless possibilities of color patterns, making them experts at camouflage. | The Living Planet A