Commercial octopus farming is advancing rapidly, raising urgent welfare questions about housing highly intelligent, solitary predators in intensive aquaculture settings.
Octopus farming presents welfare challenges that may be insurmountable within commercially viable parameters. These are solitary, territorially aggressive animals with exceptional cognitive complexity who will cannibalize conspecifics when kept together. Individual housing that prevents cannibalism removes the social interaction that their intelligence demands. The combination of obligate solitary housing, the impossibility of meeting their active predatory behavioral needs in tanks, and the documented evidence of their cognitive sophistication suggests that octopus farming cannot be made welfare-compatible at commercial scale. The welfare and scientific communities have largely reached this conclusion.