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Octopuses change color to camouflage themselves from predators such as stingrays and eels. Octopuses have even been observed changing color in their sleep. Octopus's color-changing ability is known as ...

Photographer Gareth Davies saw the cephalopod as he went for a seaside walk.

Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter. Scientists have unveiled a synthetic skin inspired by octopus camouflage that is capable of changing colour and ...