Animal Welfare Hub

Evidence-based resources for animal welfare

aquaculture

Bivalve Sentience and Welfare: Current Science

A guide to the current scientific understanding of bivalve sentience and the welfare implications for oyster, mussel, and clam aquaculture.

Key Facts

Welfare Considerations and Management

The welfare status of bivalves remains genuinely uncertain. The scientific consensus is that bivalves likely lack the neural complexity for conscious suffering, but the question is not entirely settled. A precautionary approach supports minimising unnecessary suffering regardless of sentience certainty. Welfare considerations in bivalve production include water quality maintenance, appropriate temperature handling, and minimising physical damage during harvesting and processing.

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