Shrimp is the most widely traded seafood globally, with welfare concerns spanning decapod sentience, intensive farming practices, and the scale of mortality in production systems.
Shrimp welfare presents the largest-scale welfare challenge in aquaculture by sheer number of animals affected. Global farmed shrimp production involves hundreds of billions of animals annually, with welfare practices that, if shrimp are sentient, represent welfare harm at an almost incomprehensible scale. The recognition of decapod crustacean sentience in UK law, following a rigorous government-commissioned review, creates ethical urgency around shrimp welfare that was previously absent. Eyestalk ablation - the removal of one eye to stress-induce spawning in broodstock females - causes acute pain and permanent sensory disability. High stocking densities prevent normal behaviour expression and create crowding stress. Disease outbreaks causing mass mortality are common, with mortality rates in some production systems exceeding 50%. The Shrimp Welfare Project has pioneered engagement with shrimp farmers in Asia to identify and implement feasible welfare improvements, recognising that improvements must be practical and economically viable for producers operating in competitive markets. Their work on humane slaughter, reduced stocking density, and disease prevention has begun to demonstrate that welfare improvements can be adopted without prohibitive cost increases.