Watch an octopus disguise itself as a rock

This incredible octopus looks truly alien as it rapidly camouflages and un-camouflages itself while swimming against a rock. Octopuses are masters of disguise. Their skin contains thousands of chromatophores (pigment-containing cells) that allow them to change colors in an instant.

They can also alter the texture of their skin to mimic surrounding environments, like coral, rocks, or sand. — Read the rest

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