Countershading

Countershading is a natural coloration pattern found in many animals, where the upper side is darker and the lower side is lighter. This gradient helps them blend into their environment by reducing shadows and contrast caused by lighting. For example, a fish's darker back makes it less visible from above against the ocean floor, while its lighter underside helps it blend in when viewed from below. This form of camouflage enhances the animal’s ability to avoid predators or sneak up on prey, effectively disguising their shape and presence in their natural habitat.