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In a flash, an octopus can make like ragged-edged seaweed or coral by changing the  of its skin, thus becoming nearly invisible in its environment. And in the future, robots may be able to pull off this seemingly magical camouflage trick as well.

Researchers have created a synthetic form of  that can transform from a flat, 2D surface to a three-dimensional one with bumps and pits, they report today (Oct. 12) . This technology could one day be used in soft robots, which are typically covered in a stretchy silicone "skin," the researchers said.

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