As scallop aquaculture expands globally, emerging research on bivalve neurobiology raises questions about welfare-relevant husbandry practices and the moral status of farmed scallops.
The moral and welfare status of scallops sits at a contested frontier in animal sentience research. Current scientific consensus holds that the probability of conscious pain experience in bivalves is low but not zero, and the question is taken seriously enough that some jurisdictions include cephalopods and decapod crustaceans in welfare legislation while leaving bivalves in a grey zone. From a precautionary standpoint, husbandry practices that minimize physiological stress — appropriate stocking densities, adequate food availability, and reduced mechanical trauma during handling — are advisable on both welfare and productivity grounds. Harvest methods that avoid prolonged air exposure and mechanical crushing affect both product quality and, potentially, the welfare of animals whose capacity for aversive experience remains uncertain. As sentience research advances, the farmed scallop industry may face increasing pressure to adopt explicit welfare standards.