Грипотевтис: Теңіздің ең терең тұратын жұмсақ денелісі

Genus of cephalopods known as the dumbo octopuses

Grimpoteuthis
is a genus of pelagic cirrate (finned) octopods known as the dumbo octopuses. Prey include crustaceans, bivalves, worms and copepods. The average life span of various Grimpoteuthis species is 3–5 years.

Species of Grimpoteuthis are assumed to have a worldwide distribution, living in the cold, abyssal depths ranging from – Specimens have been found off the coasts of Oregon, the Philippines, Martha's Vineyard, the Azores, New Zealand, Australia, California, Papua and New Guinea, and in the Gulf of Mexico. A fairly recent observation was on 21 June 2022 at by the vessel Normand Ocean, which inspects drilling platforms with underwater drones; the vessel was examining chains and risers on the Aasta Hansteen platform outside Trøndelag, Norway. The most recent observation as of 2023 was on 24 May 2023 at this time in Guyana by the vessel Far Samson, which also uses underwater drones. Dumbo octopuses are the deepest living octopuses known, with some specimens captured or observed at hadal depths. One Grimpoteuthis sp. specimen was captured 60 km southeast of Grand Cayman at but this depth is uncertain (as the specimen may have been captured while the net was descending to this depth). However, in 2020, Grimpoteuthis was spotted deep in the Java Trench, confirming the hadal distribution of this genus.

Observations of animals in the Atlantic reveal that Grimpoteuthis often rest on the seafloor with the arms and web spread out and uses its arms to slowly crawl along the seafloor. When disturbed the webbing and arms are contracted to push the animal off the seafloor with it then transitioning to movement using the mantle fins for rapid locomotion. The cushiony cartilage that can be found in the proximal position of the fin of the octopus is responsible for acting as a support for the thick muscles that are attached, these muscles are what allow for rapid locomotion. Although it has been suggested that species of Grimpoteuthis are capable of jet propulsion (while swimming using the fins), this has since been deemed unlikely. The female cirrate octopus does not guard or incubate the eggs (again unlike other octopuses). The Grimpoteuthis do not have an ink sac (as is the case with all cirrate octopuses). Furthermore, the cirrate octopuses lack innervated chromatophores and are therefore not capable of changing color
How cirrate octopuses escape or avoid predators is largely unknown.