Snakes' secret language of ultraviolet color: A hidden world of predator evasion and camouflage

In the study of why and how animals look the way they do, color is king—at least, the range of color humans can see. A University of Michigan study has examined a color range that humans can't see and often ignore: color in the ultraviolet range. Examining snakes, the researchers categorized how the animals used patterns of UV color and tested for factors that promote the evolution of UV color in snakes.