Proposals to farm octopuses commercially have been met with significant welfare and ethical objections. The evidence on octopus sentience and the challenges of intensive farming make a compelling case against development.
Octopus farming concentrates the ethical problems of intensive animal production with the additional complexity of a highly sentient, solitary species. Crowding triggers aggression and cannibalism. No humane mass slaughter method exists. The environmental inputs - wild-caught fish for feed - are substantial. The case against commercial octopus farming on current evidence is strong. Regulators and investors should apply a high welfare bar before permitting such development.