The welfare of marine invertebrates including crabs, lobsters, and other decapods is an emerging area of scientific and ethical concern with practical welfare implications.
The welfare of decapod crustaceans sits at the intersection of emerging animal sentience science, cultural food practices, and regulatory policy. The evidence base for crustacean pain experience has grown substantially: decapods avoid noxious stimuli, show protective behaviors, have nociceptors, and respond to analgesics in ways consistent with pain experience. The scale of potential welfare harm is enormous - billions of crustaceans are caught, transported, stored, and killed annually in conditions that would cause significant suffering if the animals experience pain. Electrical stunning technology exists and is increasingly used in high-welfare restaurants and seafood processors. The welfare case for extending protection to decapods is now sufficiently strong that regulatory change is actively occurring in several countries.