What Does Countershading Mean?

Countershading, or Thayer's law, is a method of camouflage in which an animal's coloration is darker on the upper side and lighter on the underside of the body.

What is an example of countershading?

backswimmers. …is a good example of countershading, as its light-coloured back, seen from below, blends into the water surface and sky. The rest of the body is darker and, when seen from above, blends with the bottom of the body of water in which it lives.

What is countershading in fish?

Countershading, or Thayer's law, is a method of camouflage in which an animal's coloration is darker on the upper side and lighter on the underside of the body. ... Counter-illumination camouflage is common in marine organisms such as squid.