Squid and cuttlefish are being considered for aquaculture production while their use in research is already widespread. The growing scientific recognition of cephalopod sentience demands welfare frameworks appropriate to their unique biology.
Cephalopod welfare presents unique challenges arising from their remarkable intelligence combined with fundamentally non-vertebrate neural architecture. Their distributed nervous system with ganglia in each arm means no single neural centre processes pain, complicating the application of vertebrate welfare frameworks. The evidence for cephalopod sentience is compelling: episodic-like memory, complex communication, tool use, and analgesic-sensitive wound responses together suggest subjective experience. Aquaculture development for cephalopods at scale would involve containing animals whose wild ranges and complex hunting behaviour cannot be replicated in production systems. Research use requires welfare consideration appropriate to their demonstrated cognitive complexity. The precautionary principle strongly supports treating cephalopods as sentient given the strength of the evidence.