The manner in which farmed shrimp are killed at harvest has welfare implications, and more humane slaughter methods are being developed as evidence for shrimp nociception accumulates.
Shrimp slaughter welfare sits at the intersection of emerging sentience science and practical food production. The evidence for shrimp pain is not definitive but is sufficient to justify precautionary welfare consideration. The scale of shrimp production - hundreds of billions of animals annually - means that even small improvements in killing humaneness would reduce vast quantities of potential suffering. The precautionary principle argues for developing and adopting more humane methods before the sentience debate is fully resolved.