Giant Pacific Octopus
Enteroctopus dolfeini.jpg
E. dofleini observed off Point Piños, California, at a depth of 65m
Scientific Classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Octopoda
Family: Octopodidae
Genus: Enteroctopus
Species: E. dofleini
The Giant Pacific Octopus, or North Pacific Giant Octopus, is a very large cephalopod in the genus Enteroctopus. It lives in the coastal North Pacific, usually at a depth of around 65m (215 ft). It can, however, live in much shallower or deeper waters. It is arguably the largest octopus species, based on a scientific record of a 71kg (156-lb) individual weighed live.[1] The alternative record is the seven-arm octopus, based on a 61kg (134lb) carcass estimated to have a live mass of 75kg (165lb).[2] However, several more questionable size records suggest that E. dofleini is the largest of all octopus species by a considerable margin.[3]


  1. Cosgrove, J.A. 1987. Aspects of the Natural History of Octopus dofleini, the Giant Pacific Octopus. M.Sc. Thesis. Department of Biology, University of Victoria (Canada), 101 pp.
  2. O'Shea, S. 2002. Haliphron atlanticus — a giant gelatinous octopus. Biodiversity Update 5: 1.
  3. Norman, M. 2000. Cephalopods: A World Guide. Hackenheim, ConchBooks, p. 214.