| The downward-projecting photophores may provide countershading by obliterating the silhouette when it is viewed by a predator from below. |
| The light-producing organs, or photophores, of many deepwater fishes provide a unique form of countershading. |
| To blend into their environment, some marine mammals have countershading. |
| It is a good example of countershading, as its light-coloured back, seen from below, blends into the water surface and sky. |
| We therefore report two experiments designed to test whether countershading enhances protection by diminishing the probability of detection by predators. |
| The countershading of bat rays, a form of camouflage, protects them from predators above and below. |
