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Octopuses Actually Are Social, Shift Colors During Fights

The many-armed creatures lead dramatic lives and resolve disputes using color to mark their mood.

January 29, 2016
9:15 AM EST
An octopus (foreground) displays pale color and stretches out one arm before it withdraws from an approaching octopus (background). The approaching octopus displays dark color, stand tall, and spread web and arms. | David Scheel