Add Yahoo as a preferred source to see more of our stories on Google. Octopuses are renowned for their instant color-changing abilities, a skill they use to outwit predators and surprise prey. Yet, ...

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Why do octopuses change color? Octopuses, like this young female Giant Pacific Octopus at Birch Aquarium at Scripps, change color to evade predators. (Photo Courtesy of Birch Aquarium at Scripps, ...

Octopuses are renowned for their instant color-changing abilities, a skill they use to outwit predators and surprise prey. Yet, the energy cost behind this extraordinary camouflage has remained a ...