Shrimp aquaculture is the largest seafood sector by volume, yet welfare standards are minimal. Growing evidence of shrimp sentience supports the case for improved welfare practices.
Shrimp welfare sits at the frontier of our moral consideration of animal suffering. The question of whether shrimp can suffer is genuinely uncertain — they lack a vertebrate-type central nervous system but display behavioral indicators of nociception. The scale of shrimp aquaculture production — trillions of animals annually — means that even a small probability of morally relevant suffering represents an enormous aggregate welfare concern. Eyestalk ablation is perhaps the clearest welfare concern: it causes observable pain responses and is used routinely across the industry. Applying the precautionary principle to shrimp welfare — improving conditions even in the absence of certainty about sentience — is increasingly advocated by welfare scientists.