While shrimp sentience remains contested, understanding their natural behaviors and preferences provides a basis for precautionary welfare improvements in farming practices.
Precautionary welfare thinking about shrimp begins with recognizing what we don't know. Scientific uncertainty about shrimp sentience is genuine - we cannot confidently assert that shrimp experience suffering in ways morally equivalent to vertebrates, nor can we confidently deny it. Given the billions of shrimp affected by farming practices, even a small probability of meaningful suffering has substantial aggregate moral weight. The sensible response to this uncertainty is to adopt practices that would reduce suffering if shrimp do have relevant experiences, while these practices are not prohibitively costly. Improving water quality, reducing density, and minimizing rough handling are welfare improvements that align with both precautionary ethics and good aquaculture practice.