European lobsters are increasingly reared in hatcheries and sea-based systems, with welfare questions centring on their capacity for pain and the impacts of handling and transport.
European lobsters have complex nervous systems and show avoidance learning, suggesting they experience noxious stimuli as aversive. Handling stress causes physiological responses analogous to the mammalian stress response. Individual rearing required to prevent cannibalism may cause social deprivation welfare impacts. Live transport in inadequate conditions causes prolonged physiological stress. The UK recognition of crustacean sentience in law creates a legal duty of care requiring welfare consideration in all commercial handling.