Haliphron atlanticus
Seven-arm octopus
i
2026-08-05: itis_id 205738 via WoRMS external link
The seven-arm octopus, also known as the blob octopus or sometimes called septopus, is one of the two largest known species of octopus; the largest specimen ever discovered had an estimated total length of 3.5 m (11 ft) and mass of 75 kg (165 lb).W CalCOFI holds 1 observations of it in 1 dataset between 2010 and 2010, as invert.R
- 1
- observations
- 1
- records
- 1
- sampling events
- 2010
- years
- 1
- datasets
- invert
- life stages
- 10 cm
- max length
Observed in 1 dataseti
One row per dataset, and beside it one cell per year, darker with more observations — the same
strip the front door draws per dataset. Each row ends with the name that dataset uses
(dataset_taxon); the accepted name is written once, in the title above. A quiet
pill marks a name the authority does not accept.
i
One row per dataset, and beside it one cell per year, darker with more observations — the same strip the front door draws per dataset. Each row ends with the name that dataset uses (dataset_taxon); the accepted name is written once, in the title above. A quiet pill marks a name the authority does not accept.
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name used: Haliphron atlanticus · code
9820
Ways inExplorerdb-queryERDDAPRPythonThis page as JSON
Code and endpoints ERDDAP · R · Python · JSON
library(calcofi4r) con <- cc_get_db() # the promoted release tbl(con, "obs_bio") |> filter(taxon_key == "worms:341781")
import calcofi4py as cc
con = cc.cc_get_db()
con.sql("SELECT * FROM obs_bio WHERE taxon_key = 'worms:341781'").df()Read from taxa.json of release v2026.10.21, written at release by calcofi4db::build_taxa_catalog(). The catalog's index is /species/.
How big is it 10 cm max
Every mark is a measured length with its own source — hover one to read it. The reference objects are _data/size_reference.csv: two of them, the 505 µm bongo mesh and the net's ring, are CalCOFI's own sampling gear.
Life stages invert
- Ichthyoplankton invert
The stages each dataset records for it, from the release's obs_bio.life_stage. Their lengths are under How big is it.
Lineage 11 ranks · Biota to Haliphron
Credits silhouette · photo · text · length
- Silhouette · T. Michael Keesey · Public Domain Mark · PhyloPic, drawn from Haliphron atlanticus · source
- Photo · Alvaro Jaramillo · CC BY-NC 4.0 · inat · source
- Text · Wikipedia, “Seven-arm octopus” · CC BY-SA 4.0 · revision 1372281918
- Length · sealifebase
Elsewhere Wikidata · iNaturalist
The same organism on the services the faces were fetched from; the authorities' own pages are the ids in the head.
Cite the release, v2026.10.21
Cite the release, v2026.10.21; each dataset's own citation, licence and DOI are on its page. How to cite ↗