Scientific evidence increasingly supports that decapod crustaceans like crabs, lobsters, and shrimp can experience pain and suffer. This has significant implications for their treatment in food systems.
The question of decapod sentience has moved from philosophical speculation to active scientific investigation with policy consequences. The London School of Economics review for the UK government concluded there was strong evidence that decapods and cephalopods are sentient. This shifts the moral calculus around their treatment in food systems. Methods like live boiling, live splitting, and live dismemberment that are standard in food preparation may cause significant suffering. The precautionary principle suggests that when there is credible evidence of sentience, we should adopt welfare measures rather than awaiting certainty.