Seven-arm octopus
The seven-arm octopus (Haliphron atlanticus), 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). The only other similarly large extant species is the giant Pacific octopus, Enteroctopus dofleini.
| Seven-arm octopus | |
|---|---|
| Ventral view of young female (70 mm ML) | |
| Lateral view of young male | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Order: | Octopoda |
| Family: | Alloposidae Verrill, 1881 |
| Genus: | Haliphron Steenstrup, 1861 |
| Species: | H. atlanticus |
| Binomial name | |
| Haliphron atlanticus Steenstrup, 1861 | |
| Synonyms | |
The genera Alloposina Grimpe, 1922, Alloposus Verrill, 1880 and Heptopus Joubin, 1929 are junior synonyms of Haliphron, a monotypic genus in the monotypic family Alloposidae, part of the superfamily Argonautoidea in the suborder Incirrata of the order Octopoda.
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