Proposals to farm octopuses commercially have raised profound welfare concerns — these highly intelligent, solitary animals have needs that intensive aquaculture systems cannot easily accommodate.
Octopus farming raises welfare concerns that may be insurmountable with current technology. Solitary confinement of animals whose primary social behavior is cannibalism requires either complete isolation (which denies environmental complexity) or acceptance of conspecific injury and death. High-density farming — the economic basis of commercial aquaculture — is structurally incompatible with octopus behavioral ecology. The cognitive sophistication of octopuses makes environmental deprivation particularly welfare-significant: these animals that solve novel puzzles and use tools in the wild would experience barren, confined systems as severe deprivation. Several countries including Spain (after public outcry), and several US states have moved toward restricting octopus farming pending welfare evidence. The scientific community has broadly called for a moratorium pending welfare solution development.