The octopus is among the most remarkable quick-change artists in the animal kingdom. Beneath its skin lie millions of tiny sacs of pigment called chromatophores, each controlled by muscles that can expand or contract in an instant. By adjusting these sacs, an octopus can shift its color to match sand, rock, or coral in less than a second. Some species go further, changing not only color but texture, raising small bumps on their skin to imitate the rough surface of a reef. What makes this feat especially strange is that octopuses are almost certainly colorblind. Exactly how an animal that cannot see color manages to match its surroundings so precisely remains one of the ocean’s genuine puzzles.

The octopus is among the most remarkable quick-change artists in the animal kingdom. Beneath its skin lie millions of tiny sacs of pigment called chromatophores, each controlled by muscles that can expand or contract in an instant. By adjusting these sacs, an octopus can shift its color to match sand, rock, or coral in less than a second. Some species go further, changing not only color but texture, raising small bumps on their skin to imitate the rough surface of a reef. What makes this feat especially strange is that octopuses are almost certainly colorblind. Exactly how an animal that cannot see color manages to match its surroundings so precisely remains one of the ocean’s genuine puzzles.

The octopus is among the most remarkable quick-change artists in the animal kingdom. Beneath its skin lie millions of tiny sacs of pigment called chromatophores, each controlled by muscles that can expand or contract in an instant. By adjusting these sacs, an octopus can shift its color to match sand, rock, or coral in less than a second. Some species go further, changing not only color but texture, raising small bumps on their skin to imitate the rough surface of a reef. What makes this feat especially strange is that octopuses are almost certainly colorblind. Exactly how an animal that cannot see color manages to match its surroundings so precisely remains one of the ocean’s genuine puzzles.

The octopus is among the most remarkable quick-change artists in the animal kingdom. Beneath its skin lie millions of tiny sacs of pigment called chromatophores, each controlled by muscles that can expand or contract in an instant. By adjusting these sacs, an octopus can shift its color to match sand, rock, or coral in less than a second. Some species go further, changing not only color but texture, raising small bumps on their skin to imitate the rough surface of a reef. What makes this feat especially strange is that octopuses are almost certainly colorblind. Exactly how an animal that cannot see color manages to match its surroundings so precisely remains one of the ocean’s genuine puzzles.