Octopuses Use Mirrors to Find Hidden Crabs 73% of the Time, a First for Invertebrates
Updated
Updated · martincid.com · Jun 9
Octopuses Use Mirrors to Find Hidden Crabs 73% of the Time, a First for Invertebrates
3 articles · Updated · martincid.com · Jun 9
Summary
Three California two-spot octopuses found hidden crabs from mirror reflections about 73% of the time, marking what researchers call the first such result in an invertebrate.
In the experiments, each animal saw only the crab’s reflection and had to turn away from the mirror to reach the real prey, showing it could use reflected information to guide movement.
The study does not claim self-recognition or a human-like mental map; the behavior was trained, not spontaneous, and the sample size was small.
Published in Current Biology, the findings suggest flexible spatial problem-solving may have evolved independently in octopuses, which diverged from vertebrates more than 500 million years ago.
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Octopuses Demonstrate Mirror-Mediated Spatial Reasoning: A New Benchmark in Invertebrate Cognition
Overview
A recent study has revealed that octopuses may be able to form internal representations of space, a cognitive skill not previously confirmed in invertebrates. Researchers designed an experiment to test whether octopuses could use mirrors, aiming to see if they could understand and interact with their reflections. The setup, created by Mary Kieseler and Marvin Maechler, was specifically made to assess this ability. The findings suggest that octopuses might develop internal maps of their environment, indicating a new level of intelligence and spatial reasoning in these animals. This discovery marks a significant step in understanding octopus cognition.