For many animals, use of color is essential to surviving in the wild, used to mask their identity, movement, or location. This photographic collection reveals 100 creatures from around the world, including the octopus, which can change its opacity, color, and pattern in response to threats; the walking leaf insect, which is nearly indistinguishable from the leaves it eats; and the arctic fox, whose coat turns white every winter. For each animal, zoologist Steve Parker contributes a short text describing the creature's astonishing adaptations.