Shrimp is the most consumed seafood in the United States, produced primarily in intensive aquaculture operations with significant welfare concerns and limited certification oversight.
Farmed shrimp welfare is poorly understood and inadequately regulated. High stocking densities cause chronic stress and disease vulnerability. White spot disease kills enormous numbers rapidly. Ablation of the eyestalk (to induce spawning in broodstock) is routinely practiced and almost certainly causes pain. Transport and processing conditions are unstudied from a welfare perspective. The scientific evidence for shrimp sentience is weaker than for crustaceans like crabs, but the scale of shrimp production — hundreds of billions of individuals annually — means even small probabilities of suffering translate to enormous moral significance.