Crabs are caught and killed in vast numbers annually. Emerging evidence for decapod sentience creates a compelling welfare case for improved killing methods and handling practices.
Crab welfare sits at a crucial moment in the evolution of animal welfare policy. The UK decision to include decapods in sentience legislation creates a policy framework that, if accompanied by welfare standards, could transform commercial crab killing methods. The evidence for decapod sentience — nociceptive behavior, avoidance learning, and physiological stress responses — is sufficient to warrant precautionary welfare action. Live boiling is the welfare-worst killing method: crabs remain behaviorally active during the process, suggesting consciousness persists during the initial thermal insult. Electrical stunning devices that render crabs insensible before cooking are commercially available and used in some progressive seafood operations. Consumer demand and retailer commitments are the most effective drivers of change given the pace of regulatory implementation.