By the way, can you find the camouflaged animal? It blends in so perfectly that — watch the video — when it suddenly appeared, the Woods Hole marine biologist who was filming screamed in shock. The octopus may at will blend into a variety of color schemes the differences among which it cannot, for its own part, actually perceive.
Amazing what a process of blind evolutionary groping can do, isn’t it? We feel tempted to call it ingenious. But that would be wrong.