Mussel farming is widely considered one of the most sustainable forms of aquaculture, but emerging evidence on bivalve sentience raises welfare questions worth examining.
Mussel welfare occupies the most uncertain position in the animal welfare debate, with genuinely contested scientific evidence about whether bivalves experience anything resembling pain or distress. Most welfare scientists and philosophers place the probability of significant mussel suffering very low, making mussel farming generally considered a welfare-acceptable choice compared to vertebrate animal products. However, intellectual honesty requires acknowledging the uncertainty and supporting research that continues to investigate bivalve sentience with appropriate scientific rigor.