Shrimp are produced in astronomical numbers with minimal welfare consideration. Emerging research on crustacean sentience challenges the assumption that shrimp cannot suffer.
Shrimp welfare sits at the frontier of moral circle expansion — the scientific debate about crustacean sentience and pain is ongoing, but the precautionary principle suggests that the scale of production (trillions of individuals) demands attention even at low probability of sentience. Eyestalk ablation — commonly used to induce spawning in female broodstock — removes a sensory organ without anaesthesia. The welfare implications may be smaller than for vertebrates, but the extraordinary numbers involved create a welfare concern even under modest probability of sentience.