Animals: Octopuses are colour-blind, yet change colour perfectly…

Question

Did you know? Octopuses are colour-blind, yet change colour perfectly to match their surroundings. Researchers suspect they "see" with their skin — which contains photoreceptor cells. Their pupils also have an odd W-shape that detects polarisation of light instead of colour.

Accepted Answer

Octopuses are colour-blind, yet change colour perfectly to match their surroundings. Researchers suspect they "see" with their skin — which contains photoreceptor cells. Their pupils also have an odd W-shape that detects polarisation of light instead of colour.

Octopussen zijn kleurenblind, maar veranderen perfect van kleur in hun omgeving. Onderzoekers vermoeden dat ze "zien" met hun huid — die foto-receptor-cellen bevat. Hun pupillen hebben ook een vreemde W-vorm die polarisatie van licht detecteert in plaats van kleur.

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