Shrimp are killed in enormous numbers in aquaculture, typically by methods that may cause significant suffering given growing evidence of their capacity for pain and stress responses.
Shrimp slaughter welfare is at the frontier of animal welfare science and ethics. The traditional dismissal of crustacean sentience has been substantially undermined by evidence of nociception, learned avoidance, and stress responses in decapods. Ice slurry, the most common aquaculture killing method, causes progressive hypothermia that may or may not produce rapid insensibility; the timeline and experiential quality of this process in shrimp is uncertain. Boiling live shrimp causes rapid death but preceded by initial high-temperature exposure. The scale of shrimp production means that even small improvements in slaughter welfare, if applicable, would affect enormous numbers of animals. Research into electrical stunning and rapid chilling protocols is ongoing, and some aquaculture operations are beginning to adopt welfare-assessed slaughter protocols.