Incirrata (or Incirrina) is a suborder of the order Octopoda. The suborder contains the classic "benthic octopuses," as well as many pelagic octopus families, including the paper nautiluses. The incirrate octopuses are distinguished from the cirrate octopuses by the absence in the former of the "cirri" filaments (found with the suckers) for which the cirrates are named, as well as by the lack of paired swimming fins on the head, and lack of a small internal shell (the "shell" of Argonauta species is not a true shell, but a thin calcite egg case).

Octopus sp Timor.jpg
An octopus active during the night in the coastal waters of northern East Timor
Unidentified octopus from East Scotia Ridge.jpg
An unidentified octopus observed on East Scotia Ridge at a depth of 2,394 m
(scale bar: 10 cm)[1]
Scientific classification e
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Octopoda
Suborder: Incirrata
Grimpe, 1916
  • Incirrina


Note: A new unnamed white species was discovered February 26, 2016 by NOAA’s Deep Discoverer about 2.5 miles below the ocean surface near the Hawaiian Archipelago.[2]


  1. ^ Rogers, A. D.; Tyler, P. A.; Connelly, D. P.; Copley, J. T.; James, R.; Larter, R. D.; Linse, K.; Mills, R. A.; Garabato, A. N.; Pancost, R. D.; Pearce, D. A.; Polunin, N. V.; German, C. R.; Shank, T.; Boersch-Supan, P. H.; Alker, B. J.; Aquilina, A.; Bennett, S. A.; Clarke, A.; Dinley, R. J.; Graham, A. G.; Green, D. R.; Hawkes, J. A.; Hepburn, L.; Hilario, A.; Huvenne, V. A.; Marsh, L.; Ramirez-Llodra, E.; Reid, W. D.; Roterman, C. N. (2012). Eisen, Jonathan A. (ed.). "The discovery of new deep-sea hydrothermal vent communities in the Southern Ocean and implications for biogeography". PLoS Biology. 10 (1): e1001234. doi:10.1371/journal.pbio.1001234. PMC 3250512. PMID 22235194.
  2. ^ "Ghost octopod shows how little we know about deep-sea life". Smithsonian Science News -. Retrieved 2016-03-09.