Scientific evidence increasingly supports the probability of pain experience in crabs, with implications for handling, transport, and killing practices in commercial fisheries.
The welfare case for crabs has strengthened substantially in recent years. The behavioral evidence for pain experience — wound guarding, avoidance learning, motivational trade-offs — satisfies multiple criteria scientists use to infer pain. The legal recognition in the UK has created a framework for welfare standards that other jurisdictions may follow. The most immediate welfare improvement is the adoption of electrical stunning before killing. Refrigeration to dormancy before boiling reduces but does not eliminate potential suffering. Live transport conditions — crowding, desiccation, temperature extremes — also cause welfare harm. The crab fishing and restaurant industry has been slow to respond to the scientific evidence, with economic convenience dominating welfare considerations.