Octopuses are exceptionally intelligent molluscs with complex nervous systems. Their increasing use in research and potential aquaculture raises important welfare questions that science is only beginning to address.
The welfare needs of octopuses are only beginning to be understood and integrated into husbandry standards. In research settings, they are subject to handling stress, environmental deprivation, and experimental procedures without the protections afforded to vertebrates in most jurisdictions. Their intelligence means environmental enrichment is not optional but essential — octopuses in barren tanks show stress behaviors, reduced immune function, and early death. The development of commercial aquaculture for food production, if it proceeds, must be preceded by robust welfare science. The fundamental question of whether octopuses can be farmed humanely given their solitary and cannibalistic nature requires honest engagement before commercial scaling.