Octopuses have been documented changing colour 177 times an hour. An octopus’ camouflage reaction time is faster than any other animal’s occurring in one-fifth of a second. Despite their miraculous colour-changing abilities, octopuses are colour-blind. Scientists aren’t sure if the octopus is even aware of what its skin is doing when it transforms from one colour and texture to the next.
They can change not only their coloring, but also the texture of their skin to match rocks, corals and other items nearby. They do this by controlling the size of projections on their skin (called papillae), creating textures ranging from small bumps to tall spikes. Color changing is just one tool in an octopus’s arsenal of defenses, however; it can also spray ink, and make a quick escape through any hole it can get its hidden bony beak through.
Picture Credit : Google