Some animals are quick-change artists. Take the hogfish, a pointy-snouted reef fish that can go from pearly white to mottled brown to reddish in a matter of milliseconds as it adjusts to shifting conditions on the ocean floor.
Scientists have long suspected that animals with quick-changing colors don't just rely on their eyes to tune their appearance to their surroundings—they also sense light with their skin. But exactly how "skin vision" works remains a mystery.
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Scientists have long suspected that animals with quick-changing colors don't just rely on their eyes to tune their appearance to their surroundings—they also sense light with their skin. But exactly how "skin vision" works remains a mystery.
Continued...
Source