An octopus that can change the size and color of skin patterns has inspired deception technology for use in the military, medicine, robotics, and more.

Glassfrogs make themselves transparent while they rest by taking red blood cells from circulation and concealing them in their livers.

Cracking the mystery of how squids evolved to control their skin's color and brightness could lead to color-shifting camouflage.

With less snow, Scotland's mountain hares don't blend into their surroundings in winter. Researchers say it's bad news for animals in a changing climate.

"It turns out in nature, flamboyant cuttlefish are camouflaged nearly all of the time." Sex and fighting get them to show their colors.

Sixteen species of camouflaged deep-sea fish have skin so dark that almost no light bounces back to the eye.

Sixteen species of camouflaged deep-sea fish have skin so dark that almost no light bounces back to the eye.