Researchers were thrilled to discover the aquatic architecture, which is reminiscent of human cities. But in a city filled with cannibal cephalopods, life is not a walk in the park. Gloomy octopus. Photo credits: Peter Godfrey-Smith. The octopus has long been regarded as an intelligent yet solitary creature. Gloomy octopuses (octopus tetricus) especially, were thought to…

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