Bivalve farming — mussels, oysters, clams, and scallops — is often promoted as sustainable seafood, but the welfare status of these animals and the ethics of their production are actively debated in welfare science.
Bivalve welfare sits at the frontier of animal ethics, where the precautionary principle meets practical food system decisions. Most welfare scientists assign low but non-zero probability to bivalve sentience. For those concerned about the outer limits of moral consideration, bivalve farming represents a relatively low-risk form of animal-sourced food compared to vertebrate farming, while still warranting attention to slaughter methods such as avoiding boiling alive when alternatives exist.