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Common cuttlefish

Like other cephalopods, the common cuttlefish (Sepia officials Linnaeus, 1758) possesses serious brain power.
Hans Hillewaert, WoRMS for SMEBD

Like other cephalopods, the common cuttlefish (Sepia officials) is no dummy. But while octopuses are quick to learn manual tasks like opening jars, cuttlefish have a different skillset: the social. Unlike other cephalopod species, cuttlefish are very social and interact with each other frequently, like humans, and have sophisticated communication ability. Read more about cephalopod intelligence and why scientists study cuttlefish.