Color patterns seen in fish and other animals evolved to serve various purposes. Lagunatic Photo/iStock via Getty Images Plus A thought experiment can help visualize the challenge of achieving ...

Many living things twitch or make noises while they sleep, but octopuses actually flicker while they are resting. Yes, the octopuses shift between different colors and patterns -- to stunning effect - ...

The colors and patterns of black swallowtails reveal the diversity of evolutionary dynamics acting on the sexes and the various life-history stages Six species of swallowtail butterflies occur locally ...

Six species of swallowtail butterflies occur locally, and they combine yellow, black, orange, blue and red in several diverse patterns that invariably catch the eye. We can marvel at them, but our ...