The welfare implications of shrimp slaughter methods used in aquaculture, and what evidence tells us about humane approaches for one of the world's most farmed animals.
Shrimp slaughter sits at the frontier of welfare science, where certainty about sentience meets the practical challenge of humanely killing billions of small invertebrates. The precautionary case for improving shrimp slaughter is strengthened by growing evidence of nociception and stress responses in crustaceans. Live chilling — the dominant industry method — involves prolonged exposure to cold temperatures and possible tissue damage before death, a process that would be considered unacceptable for vertebrates if similar suffering evidence existed. As the scientific consensus on crustacean sentience strengthens, the aquaculture industry will face growing pressure to adopt more rapid killing methods. The sheer scale of shrimp production means that even small welfare improvements per animal translate to massive aggregate welfare gains.