Cephalopods are among the most cognitively complex invertebrates. Their welfare in research and emerging aquaculture settings requires attention informed by their remarkable biology.
Cephalopod welfare represents the most developed case for extending serious moral consideration to invertebrates. The scientific evidence for octopus and cuttlefish sentience is compelling by any reasonable standard - they demonstrate problem solving, play, and neurological complexity that most people associate with vertebrates. Research and aquaculture settings must incorporate welfare thinking appropriate to animals capable of these experiences. The EU's regulatory recognition of cephalopod sentience is a significant step; implementing it effectively requires developing species-appropriate welfare standards.