| Wülker's flapjack octopod [1] | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Order: | Octopoda |
| Family: | Opisthoteuthidae |
| Genus: | Grimpoteuthis |
| Species: | G. wuelkeri |
| Binomial name | |
| Grimpoteuthis wuelkeri Grimpe, 1920 [3] | |
| Synonyms | |
| |
Grimpoteuthis wuelkeri is a medium-sized octopus characterized from multiple specimens.
This octopus is known from the continental slope in the northern Atlantic Ocean at 2,055 meters deep. [4] It is likely demersal. [2]
At maximum, its body is 400 millimeters long, and its mantle is 115 millimeters long. Its fin span is around 70% of the octopus' total length. The shell is shaped like a letter "U". [1]
Its arms have around 60 to 70 suckers each, [4] and these suckers aren't sexually dimorphic. [1] A web covers about 2/3 of its arms. [4] It has a robust shell, with a thick basal portion, and strong attachments from their fins. [5]
Umbrella octopuses are a group of pelagic octopuses. Umbrella octopuses are characterized by a web of skin between the tentacles, causing them to somewhat resemble an opened umbrella when the tentacles are spread.
Stauroteuthis gilchristi is a species of small pelagic octopus found at great depths in the south Atlantic Ocean. It is believed to be one of a very small number of octopuses to exhibit bioluminescence, like its sister taxon Stauroteuthis syrtensis.
Grimpoteuthis bathynectes is a deepwater species of so-called Dumbo octopus first described in 1990. So far only thirteen specimens have been recorded.
Cryptoteuthis brevibracchiata, the short-arm flapjack octopod, is a deepwater species of octopod. It is the only species in the monotypic genus Cryptoteuthis one of the cirrate octopuses of the family Opisthoteuthidae, the umbrella octopuses. It is known from a single specimen which was collected in the northeastern Atlantic Ocean. It has characteristics which are shared with two other genera in the Opisthoteuthidae, Opisthoteuthis and Grimpoteuthis, but is sufficiently distinctive from either of these to warrant the erection of a new genus.
Grimpoteuthis abyssicola is a species of small deep-sea octopus known from a single female specimen. The specimen was found in the Tasman Sea off New Zealand, between 3,154 and 3,180 meters deep. More specifically, the octopus was found in the Lord Howe Rise.
Grimpoteuthis boylei is a species of octopus known from only ten individuals.
Grimpoteuthis challengeri is a species of large octopus living in the abyssal zone.
Grimpoteuthis discoveryi is a small species of octopus known from more than 50 specimens. It was described in 2003, but specimens have been found as early as 1910. The type species was found at 49°35'N, 14°01'W.
Grimpoteuthis hippocrepium is a species of octopus. It is only known from one specimen found in 1904, which was poorly preserved. Some characteristics G. hippocrepium are unknown.
Grimpoteuthis innominata is a species of small, pelagic octopus only known from two specimens. Steve O'Shea discovered it in 1999, and created the genus Enigmateuthis to contain it. Martin Collins placed the species in the genus Grimpoteuthis.
Grimpoteuthis meangensis is known from either one or two specimens, though the second may be of a completely different species. The first was damaged. Both were found by William Evans Hoyle within one year of each other, and no other animals of the species have been identified since 1886.
Grimpoteuthis megaptera is a species of umbrella octopus known from five specimens, collected by Addison Emery Verrill. Between two and three of these specimens may belong to different species.
Grimpoteuthis pacifica is an octopus known from one badly damaged specimen. It's not completely described, and it's not easily separated from some other species of octopus. Nothing clearly differentiates G. pacifica from Grimpoteuthis hippocrepium except for its type locality.
Grimpoteuthis plena is known from only one specimen, which cannot be easily separated from other species of Grimpoteuthis in the Atlantic Ocean. The specimen was in poor condition. It's similar to Grimpoteuthis wuelkeri, and may be a junior specimen of Grimpoteuthis umbellata.
Grimpoteuthis tuftsi is an octopus known from seven specimens.
Grimpoteuthis umbellata, known from three specimens, is the type species of Grimpoteuthis.
Opisthoteuthis agassizii is a lesser-known, deep-sea octopus first described in 1883 by Addison E. Verrill.
Opisthoteuthis borealis is a lesser-known species of octopus found near Greenland and Iceland, especially in the Davis Strait. The species was described from 9 specimens, and is one of the most recent Opisthoteuthis species described. Not much is known about it besides its anatomy and habitat.
Opisthoteuthis bruuni is a species of finned cirrate octopus found in waters near Antofagasta, Chile. Their tissue is almost jelly-like, and they have short, round bodies.
Opisthoteuths massyae is an octopus living in the eastern Atlantic Ocean.
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