In late September 2025, an image claiming to show an octopus helping a diver with underwater maintenance tasks began circulating on Facebook. One version (archived), included the following caption: ...
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An octopus learned to use a mirror to find food hidden behind it, a skill never seen outside vertebrates
Earlier studies on Octopus vulgaris documented a range of behavioral responses to mirrors, including aggression, avoidance, exploration, and inspection. Those responses tell us octopuses do not simply ...
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