Commercial crab fishing involves boiling crabs alive. Growing evidence of crustacean sentience raises significant welfare questions about this widespread practice.
The welfare case for crustaceans has shifted significantly with accumulating evidence of sentience and the policy response in the UK. Live boiling, the standard killing method for crabs and lobsters, involves immersion in hot water — a process that may involve significant distress before unconsciousness. The growing scientific consensus that decapods can experience pain-like states makes this practice increasingly difficult to defend on welfare grounds. Electrical stunning renders crabs unconscious immediately and is compatible with commercial use. The challenge is adoption across the diversity of fishing, processing, and catering operations that handle crabs. Consumer preference for humanely killed seafood, retailer commitments, and regulatory requirements are the levers for accelerating change.