From chameleons to octopuses: How and why these 7 animals change colour to survive

Many animals possess the fascinating ability to change colour. Chameleons adjust nanocrystals for temperature control and communication. The Cyanea Octopus uses chromatophores and texture changes for camouflage. Cuttlefish are masters of disguise, even in darkness. Crab spiders may change colour for reasons beyond hunting. Golden Tortoise Beetles alter fluid levels in their shells. Pacific Tree Frogs adapt to their surroundings.

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