GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY
Day octopus (Octopus cyanea) hunting on a reef with a dot-and-dash goatfish (Parupeneus barberinus). This octopus is typically brown, but has the ability to rapidly change colour and skin texture to blend in with its surroundings. Photographed in the Red Sea, Egypt.
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