The welfare of shrimp at slaughter is an underexplored area with growing scientific and ethical attention as evidence of crustacean sentience grows.
If shrimp have the capacity to suffer - which growing evidence suggests is plausible - then the methods currently used to kill billions of shrimp annually cause significant avoidable pain. Applying the precautionary principle and developing more humane slaughter methods is justified by the scale of production and the mounting evidence for decapod crustacean sentience.