Shrimp aquaculture produces over 5 million tonnes annually. With billions of individuals affected, even small improvements in welfare standards have enormous aggregate impact.
The sheer number of individual shrimp produced means that the aggregate welfare significance of this industry exceeds that of almost any other animal production system. Eyestalk ablation, which destroys a major hormone-producing organ causing acute pain and permanent disability, is performed on hundreds of millions of broodstock females annually. Even setting aside ablation, intensive crowding causes behavioral and physiological stress responses. Slaughter methods remain almost entirely unaddressed in welfare frameworks. The biological complexity of shrimp sufficient to support sentience is increasingly recognized, making current production norms ethically difficult to justify.