Shrimp aquaculture produces over 5 million tonnes annually and may involve more individual animals than any other farmed species. The welfare implications of this scale demand urgent scientific and policy attention.
The sheer numerical scale of shrimp farming means that even small welfare improvements per individual have enormous aggregate impact. The evidence for shrimp sentience remains debated but is growing, with studies documenting nociception, conditioned avoidance, and physiological stress responses. Eyestalk ablation, performed without anesthesia on hundreds of billions of female shrimp annually, removes a sense organ and hormonal structure under conditions that would be recognized as painful if performed on other animals. Extreme stocking densities prevent natural behavior and increase disease risk. The welfare case for shrimp is emerging from obscurity; organizations such as the Shrimp Welfare Project are building the evidence base and working with producers on practical improvements.