Commercial crab fishing involves practices including live dismemberment for bait, prolonged live transport, and poorly studied killing methods that raise serious welfare concerns now supported by scientific recognition of crustacean sentience.
Commercial crab welfare is poorly regulated relative to vertebrate fisheries. Live boiling, a common preparation method, causes prolonged suffering in animals now recognised to have nociceptive capacity. Limb removal from live animals for bait or to prevent overcrowding injuries is practised without anaesthesia or welfare consideration. Transit conditions for live crabs, including temperature fluctuation and crowding, cause physiological stress. Shore crabs deprived of shelter and subjected to repeated handling show behavioural indicators of negative affective states that parallel stress responses in vertebrates.