Crabs are caught and killed in large numbers with minimal welfare consideration. Accumulating evidence on crab sentience raises important questions for fishing and food preparation.
Crab welfare represents an area where scientific evidence has outpaced public awareness and regulatory change. The evidence that crabs can experience pain is now sufficient to justify avoiding methods that cause prolonged suffering. Live boiling — where crabs are placed in cold water brought to the boil, extending the killing time significantly — is particularly problematic from a welfare standpoint. More humane alternatives including the CrustaStun device and brain-spiking are available but rarely used in commercial contexts.