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Never play hide-and-seek with a cephalopod

(Footage courtesy Roger Hanlon, produced by Flora Lichtman/Science Friday)

When marine biologist Roger Hanlon saw this video, he started screaming. Can you spot the octopus? You might scream too when you see it. Cephalopods (octopus, squid and cuttlefish) change the color of their skin and they can mask the texture of the rocks and plants. They blend in seamlessly, but cephalopods are color blind. No one knows how they do it, Hanlon says.

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