Cuttlefish are most likely the very best shape-shifters on our planet. They’re a type of mollusk, without the shell, and they not only can change their colors in a multitude of ways; they can change the texture of their skin as well. The NOVA video linked to above has astonishing video footage of the incredible intelligence of these ancient sea creatures, and their pyrotechnic “light show” used to stun certain prey into temporary paralysis. It also explains the way in which their cellular structure is designed to “light up” multiple layers of individual pigmented dots at specific times to create an apparently infinite array of patterns of colors. This is truly a fascinating video.