Cephalopods — octopuses, squid, cuttlefish, and nautiluses — possess nervous systems of remarkable complexity. Their emerging status as sentient animals has significant implications for fisheries, aquaculture, and research.
The legal recognition of cephalopod sentience in the UK represents a significant advance, but regulatory protection remains minimal globally. Octopuses in particular appear to have individual personalities, show what look like emotions, and engage in sophisticated exploratory behaviour suggesting a rich inner life. Their use in research and growing interest in aquaculture raises welfare questions that existing frameworks are ill-equipped to address. Precautionary enrichment, appropriate housing, and humane endpoint standards should be applied to cephalopods in any controlled setting.