Balancing the ecological role of bivalves with growing uncertainty about their potential sentience.
Bivalves occupy a unique position in animal welfare debates: they are among the animals most commonly consumed by people who otherwise restrict animal products for welfare reasons, on the basis that their sentience probability is low. The current scientific consensus supports this position — bivalves lack the neurological architecture associated with pain experience in vertebrates. However, the precautionary principle applied to uncertainty suggests that as welfare-focused consumers, maintaining awareness of the debate and supporting further research is appropriate. The strong ecological case for bivalve farming as a low-impact protein source adds a positive dimension to their consideration in welfare-conscious dietary choices.