The moral status of bivalves remains deeply uncertain, with growing attention from welfare scientists and philosophers examining what obligations — if any — exist toward these animals.
Bivalve welfare sits at the frontier of welfare science and philosophy. The absence of a centralised nervous system makes conscious experience seem unlikely, but the absence of evidence is not evidence of absence. Some welfare scientists argue the precautionary principle justifies humane treatment assumptions; others find the evidence insufficient to warrant welfare obligations. The question matters at scale — bivalves are produced in vast numbers as a theoretically more sustainable protein. Intellectual honesty requires acknowledging the genuine uncertainty rather than defaulting to either confident dismissal or overclaimed sentience.