Mussels are widely farmed as a low-impact protein source, but emerging research on bivalve sentience raises questions about welfare standards in mussel aquaculture.
The welfare status of mussels is genuinely uncertain — they lack the neurological structures most associated with conscious suffering in vertebrates, but have sensory systems that respond to noxious stimuli. The precautionary principle suggests some consideration is warranted given this uncertainty. Even if mussels prove to have minimal sentience, the low environmental impact of mussel farming makes it a relatively defensible seafood choice compared to carnivorous finfish aquaculture.