A bigfin reef squid (Sepioteuthis Lessoniana) is a vicious, highly intelligent predator. They can change skin color within seconds using cells called chromatophores. In each of the chromatophores, there is a bag full of pigments, like a balloon, that can be colored. If the balloon is stretched, the color would come together into one single spot, making the color appear brighter. Cephalopods (a class of mollusks) also have leucophores, a mirror back of the colors of the surrounding environment that makes the squid less noticeable. Apart from hiding from danger, the color patterns are used as a secret code to communicate with other squids while remaining invisible to predators.

Artist: Panitbhand Paribatra Na Ayudhya