Decapod crustaceans including crabs, lobsters, and crayfish are now recognized as likely sentient under UK law, creating new welfare obligations for the fishing, aquaculture, and food service industries.
Decapod crustaceans show behavioral evidence of pain learning, protective responses to injury, and physiological stress indicators that collectively support the precautionary conclusion of sentience. The practice of boiling them alive is therefore potentially causing significant conscious suffering. Available humane killing methods make this suffering avoidable at minimal cost and effort.