noun
- a pattern of coloration in animals in which the upper surface is darker and the lower surface is lighter, providing camouflage by counteracting the effects of light and shadow
Usage: biology; also called countershade or Thayer's principle
Examples
- Many fish exhibit countershading, with dark backs and pale bellies that help them blend into their aquatic environment.
- The shark's countershading makes it difficult for prey below to see it against the bright surface water.
- Dolphins use countershading as a form of camouflage in the ocean.
- Penguins display countershading, which helps them avoid detection by both predators and prey.
- Scientists study countershading in marine animals to understand how evolution shapes survival strategies.