Grimpoteuthis is a genus of pelagic umbrella octopuses known as the dumbo octopuses. The name "dumbo" originates from their resemblance to the title character of Disney's 1941 film Dumbo, having a prominent ear-like fin which extends from the mantle above each eye. There are 15 species recognized in the genus. Prey include crustaceans, bivalves, worms and copepods. The average life span of various Grimpoteuthis species is 3 to 5 years.
Moroteuthopsis longimana, also known as the giant warty squid or longarm octopus squid, is a large species of hooked squid. It attains a mantle length of at least 85 cm and probably over 1.15 m. The largest complete specimen of this species, measuring 2.3 m in total length, was found in Antarctica in 2000.
Graneledone is a genus of octopuses in the family Octopodidae. The type species is Eledone verrucosaVerrill, 1881.
The colossal squid is part of the family Cranchiidae. It is sometimes called the Antarctic squid or giant cranch squid and is believed to be the largest squid species in terms of mass. It is the only recognized member of the genus Mesonychoteuthis and is known from only a small number of specimens. The species is confirmed to reach a mass of at least 495 kilograms (1,091 lb), though the largest specimens—known only from beaks found in sperm whale stomachs—may perhaps weigh as much as 600–700 kilograms (1,300–1,500 lb), making it the largest-known invertebrate. Maximum total length has been estimated at 9–10 metres (30–33 ft).
Stauroteuthis syrtensis, also known as the glowing sucker octopus or bioluminescent octopus, is a species of small pelagic octopus found at great depths in the north Atlantic Ocean. It is one of a very small number of octopuses to exhibit bioluminescence.
Muusoctopus levis is a species of octopus in the family Enteroctopodidae. It was first described by William Evans Hoyle in 1885 in an article in the Annals and Magazine of Natural History detailing the new species of octopus found on HMS Challenger as part of the Challenger expedition; the type specimen was retrieved from the Southern Ocean. The species is found in subantarctic waters in the Southern Ocean, particularly surrounding Heard Island and Kerguelen Island, but specimens comparable to M. levis have also been found at the Antarctic Peninsula.
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.
All extant cephalopods have a two-part beak, or rostrum, situated in the buccal mass and surrounded by the muscular head appendages. The dorsal (upper) mandible fits into the ventral (lower) mandible and together they function in a scissor-like fashion. The beak may also be referred to as the mandibles or jaws.
Grimpoteuthis bathynectes is a deepwater species of so-called Dumbo octopus first described in 1990. So far only thirteen specimens have been recorded.
Louise Allcock is a British researcher, best known for her work on ecology and evolution of the cephalopods of the Southern Ocean and deep sea. She is the editor of the Zoological Journal of the Linnean Society.
Megaleledonidae is a family of octopuses in the superfamily Octopodoidea. It was formerly placed in the family Octopodidae sensu lato as the subfamily Megaleledoninae but more recent studies have raised this taxon as a valid family.
Bathypurpurata is a genus of incirrate octopus in the family Megaleledonidae from the Antarctic Ocean. The genus has only one species, Bathypurpurata profunda, a small purple octopus which lacks an ink sac and has a single row of suckers and a very large salivary gland. It was described in 2005 from a type specimen caught between the Antarctic Peninsula and the South Shetland Islands.
Grimpoteuthis challengeri is a species of large octopus living in the abyssal zone.
Octopus oliveri, is a species of octopus found in the western Pacific Ocean off the coast of Japan, Hawaii, and Kermadec Island, in reefs and boulder coasts.
Octopus pallidus, the pale octopus, is a species of octopus found in the Southwest Pacific.
Octopus insularis is a species of octopus found off the coast of Brazil.
Opisthoteuthis agassizii is a lesser-known, deep-sea octopus first described in 1883 by Addison E. Verrill.
Opisthoteuthis grimaldii is an octopus found near the Azores.
Opisthoteuths massyae is an octopus living in the eastern Atlantic Ocean.
Opisthoteuthis medusoides is a cirrate octopus living off the coast of Tanzania near Dar es Salaam. However, its actual range may be more extensive.
Matias, Ricardo S., et al. “Show Your Beaks and We Tell You What You Eat: Different Ecology in Sympatric Antarctic Benthic Octopods under a Climate Change Context.” Marine Environmental Research, vol. 150, 2019, p. 104757., doi:10.1016/j.marenvres.2019.104757. Schwarz, Richard, et al. “Life Histories of Antarctic Incirrate Octopods (Cephalopoda: Octopoda).” PLOS ONE, vol. 14, no. 7, 2019, doi:10.1371/journal.pone.0219694.
