Lobsters are caught and sold live in vast numbers globally. Growing evidence for crustacean sentience has prompted legislative changes in several countries and is driving adoption of more humane killing practices.
Lobster welfare science has advanced considerably since 2020. Studies by Elwood, Birch, and others demonstrate that lobsters show prolonged avoidance of previously painful stimuli, modify behaviour to avoid noxious chemicals, and show physiological responses consistent with pain processing. While neurological differences from vertebrates mean subjective experience cannot be assumed equivalent, the precautionary principle argues for minimising lobster suffering during slaughter. Live boiling without prior stunning is the most common method and likely causes sustained aversive experience before death. Alternatives include electrical stunning via CrustaStun devices (rendering lobsters insensible within 0.3 seconds), rapid bisection through the neural ganglia, or chilling in ice water before boiling. Switzerland and New Zealand have legislated against live boiling without prior stunning. Consumers, restaurants, and retailers can adopt more humane practices without waiting for regulation.