A cuttlefish (Sepiida) photographed on the sea floor while scuba diving in Dar es Salaam, Tanzania. Cuttlefish, although color-blind, are able to to rapidly alter their skin color, pattern as well as the shape of the skin in order to camouflage themselves, to communicate to other cuttlefish and as a display to warn off potential predators. They create chromatically complex patterns, without the ability to perceive color, through some mechanism which isn’t yet understood. Their ability to assess their surroundings and match the color, contrast and texture of the substrate, even in total darkness is quite fascinating. Learn more about cuttlefish here.