Shrimp represent the largest aquaculture production by volume, and growing evidence for crustacean sentience is transforming the welfare framework for this globally consumed species.
Shrimp welfare has moved from theoretical concern to active regulatory and scientific debate within the past few years, driven by the growing evidence for crustacean sentience. If shrimp experience pain, the welfare implications of current aquaculture practices — high stocking densities, live processing, mass disease mortality events — are enormous given the volume of production. The precautionary principle argues for welfare consideration proportionate to credible sentience evidence, and the evidence for shrimp sentience is now credible enough to warrant precautionary action. Welfare improvements that can be implemented without transforming the industry include improved stunning methods before processing, disease prevention reducing mass mortality events, and stocking density management. The UK regulatory response — including decapods in animal welfare legislation — represents a global first that may set a precedent for broader international welfare frameworks.