Farmed bivalves (mussels and oysters) have the lowest welfare-impact profile of any farmed animal. Understanding why they may represent a welfare-positive food choice is useful for informed decision-making.
Bivalve welfare represents perhaps the best case for an animal-derived food choice from a welfare perspective. The scientific evidence that oysters and mussels are not sentient - lacking the neural architecture for conscious pain experience - is stronger than for any other group of animals routinely farmed. Combined with their environmental benefits (water filtration, habitat creation, low carbon footprint), farmed bivalves represent an option that people concerned about animal welfare can include in their diet with the lowest welfare-impact. The distinction between farmed bivalves (welfare-positive) and wild-dredged scallops (habitat-destructive, high bycatch) is important for making genuinely informed choices.