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Opisthoteuthidae
Umbrella octopuses (family Opisthoteuthidae) 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. Description Opisthoteuthidae are a group of octopuses characterized by a web of skin in between their tentacles. They have a U or W shaped shell that holds the mantle and connects to their tentacles at the bottom. This structure makes the umbrella octopus resemble an umbrella when they spread their tentacles/web out. The structure of the umbrella octopus has the oral surface below the mantle of the octopuses and the web with their tentacles surround the bottom of the mantle. Their outer skin has a very delicate consistency that results in white spots appearing on their skin when damaged. Opisthoteuthidae fall into the cirrate octopod group, meaning they have fins. Although opisthoteuthidae are categorized as cirrates, unlike the other cirrat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Octopus
An octopus ( : octopuses or octopodes, see below for variants) is a soft-bodied, eight- limbed mollusc of the order Octopoda (, ). The order consists of some 300 species and is grouped within the class Cephalopoda with squids, cuttlefish, and nautiloids. Like other cephalopods, an octopus is bilaterally symmetric with two eyes and a beaked mouth at the center point of the eight limbs. The soft body can radically alter its shape, enabling octopuses to squeeze through small gaps. They trail their eight appendages behind them as they swim. The siphon is used both for respiration and for locomotion, by expelling a jet of water. Octopuses have a complex nervous system and excellent sight, and are among the most intelligent and behaviourally diverse of all invertebrates. Octopuses inhabit various regions of the ocean, including coral reefs, pelagic waters, and the seabed; some live in the intertidal zone and others at abyssal depths. Most species grow quickly, mature ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opisthoteuthis Agassizii
''Opisthoteuthis agassizii'' is a lesser-known, deep-sea octopus first described in 1883 by Addison E. Verrill. Like all cirrate octopuses, ''O. agassizii'' has fleshy fins to aid in swimming and a small internal shell. Males are up to four times heavier than females, and their suckers are proportionally larger. Both sexes are small. This species is found found in the north-west, and western Atlantic coasts, over depths of 277 to 1,935 meters (historic records from east Atlantic coasts were likely misidentifications with other ''Opisthoteuthis''). Like other opisthoteuthids, they occupy the benthic zone, living on or near the seafloor. These octopuses most likely prey on polychaete worms and crustaceans that live on or just above the seafloor. All females of ''O. agassizii'' become sexually mature when they reach 190 grams (6.702 oz.) and all males are sexually mature once they reach 95 g (3.351 oz.). However, both sexes continue to grow after they reach maturity. While ''O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptoteuthis
''Cryptoteuthis brevibracchiata'', the short-arm flapjack octopod, is a deepwater species of Octopus, octopod. It is the only species in the monotypy, monotypic genus ''Cryptoteuthis'' one of the Cirrina, cirrate octopuses of the Family (biology), 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. Description ''Cryptoteuthis brevibracchiata'' is a bell-shaped octopus with a semi-gelatinous, semi-transparent body, except for the dark tips of the oral web and the tips of the fins. The fins are small and round, and their length is equal to half the width of the head. It has short arms, each with a single row of small, broad suckers and with a double row of Cirrus (biology), ci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luteuthis
''Luteuthis'' is a small genus of cirrate octopuses currently placed in the family Opisthoteuthidae. There are two species classified in this genus one from waters west of New Zealand and the other from the South China Sea. Taxonomy ''Luteuthis'' are characterized by several unique features. The body is relatively elongate, extensively gelatinous and lacking areolar spots. The paired fins are laterally placed, and supported by a W-shaped internal shell with the shell wings bearing in-rolled margins and tapering to acute points. The arms are narrow and connected by simple webbing, there is no web nodule acting as a web attachment point. The suckers are crenulated (around the aperture opening) and are flanked by rows of short cirri (cirri about half as long as the sucker diameter). The gills resemble a "half-orange" and have seven lamellae. ''Luteuthis'' species have a well developed radula as well as palatine teeth on the palps flanking the radula, and the digestive gland is bi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptoteuthis Brevibracchiata
''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. Description ''Cryptoteuthis brevibracchiata'' is a bell-shaped octopus with a semi-gelatinous, semi-transparent body, except for the dark tips of the oral web and the tips of the fins. The fins are small and round, and their length is equal to half the width of the head. It has short arms, each with a single row of small, broad suckers and with a double row of cirri which are of moderate length, with each cirrus just longer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grimpoteuthis Angularis
''Grimpoteuthis angularis'' is a species of octopus in the family Opisthoteuthidae. It was first described by Tristan J Verhoeff and Steve O'Shea in 2022, based on a single specimen found in New Zealand. Taxonomy The species was given the name ''angularis'', referring to the octopus' angled shell. Verhoeff & O'Shea proposed that the common name of the species should be angle-shelled dumbo octopus. This species (as well as other ''Grimpoteuthis'') may belong in its own family, the Grimpoteuthididae . Description and habitat The shell of ''Grimpoteuthis angularis'' is V-shaped, notably different to other ''Grimpoteuthis'', the relatively elongate cirri are also distinctive. The holotype was discovered on the Chatham Rise to the east of New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-lar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grimpoteuthis Meangensis
''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. Description and habitat The type specimen, or original specimen, was found off the south Philippines. It lives about 1,000 meters beneath the water's surface. Like other members of its family, Opisthoteuthidae, ''G. meangensis'' could be demersal. The second specimen was discovered 2,000 meters south of where the first specimen was found. This octopus' mantle reaches 53 millimeters long, and it weighs at least 1,345 grams when wet. Every arm has between 60 and 70 suckers, which are small. Like other cirrates, ''G. meangensis'' has a web covering its arms to some degree; the web of ''G. meangensis'' covers the majority of its arms. The cirri on these arms are short. The fins ''G. meangensi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grimpoteuthis
''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 17 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. Species and taxonomy As noted above, many species collected on the ''Challenger'' expedition were initially classified in the genera '' Cirroteuthis'' and '' Stauroteuthis.'' Several species formerly classified as ''Grimpoteuthis'' were moved to genera '' Cirroctopus'' and '' Opisthoteuthis''. A new family, Grimpoteuthididae (alternatively spelled Grimpoteuthidae), has been proposed to accommodate ''Grimpoteuthis'' and those of genera ''Enigmatiteuthis'', ''Cryptoteuthis'', and ''Luteuthis''. The persistent confusion and disparit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opisthoteuthis Albatrossi
''Opisthoteuthis albatrossi'' (common name in ja, オオクラゲダコ) is a cirrate octopus originally found off Kinkasan in Japan. This species was described from only four specimens. It is similar to '' Opisthoteuthis californiana;'' the two may be the same species. It is also similar to '' Opisthoteuthis japonica.'' ''O. albatrossi'' lives in the North Pacific, from Japanese waters to the Sea of Okhotsk. It exists at recorded depths of below the surface. Description ''Opisthoteuthis albatrossi'' is a small octopus; its total length is . Each arm has more than 80 suckers, and males have some very enlarged suckers, typical to opisthoteuthids. Like other cirrate octopuses, it has a thick, fleshy web connecting its arms; a small internal shell to support its body; and cirri Giovanni Battista Cirri (1 October 1724 – 11 June 1808) was an Italian cellist and composer in the 18th century. Biography Cirri was born in Forlì in the Emilia-Romagna Region of Italy. He had ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luteuthis Shuishi
''Luteuthis shuishi'' is a species of octopus that lives in the South China Sea The South China Sea is a marginal sea of the Western Pacific Ocean. It is bounded in the north by the shores of South China (hence the name), in the west by the Indochinese Peninsula, in the east by the islands of Taiwan and northwestern Phil ..., which is known only from one female specimen collected at a depth of 767 meters. It has short arms and is quite gelatinous. The octopus's total length is about 300 millimeters. References Octopuses Molluscs Molluscs described in 2002 Marine molluscs of Asia Species known from a single specimen {{octopus-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grimpoteuthis Pacifica
''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. Description and habitat The specimen was captured off Papua New Guinea in the South Pacific Ocean, more specifically in the Coral Sea The Coral Sea () is a marginal sea of the South Pacific off the northeast coast of Australia, and classified as an interim Australian bioregion. The Coral Sea extends down the Australian northeast coast. Most of it is protected by the Fre ..., where it was 4,500 meters below sea level. ''Grimpoteuthis pacifica'' is probably demersal. Its fins are 55 millimeters long. Each arm has 52 suckers, the largest of which are 2.5 millimeters across. Its arms range in length from 130 millimeters long to 170 millimeters long, and its eyes are very large. The oc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madoka Sasaki
was a Japanese zoologist, who is known for his work on the cephalopods of Japan, as well as other groups such as salamanders. Sasaki was Professor of Zoology in the Fishery Department of the College of Agriculture at Tohoku Imperial University, Sapporo, Japan. Sasaki died in 1927 and his major work ''A monograph of the dibranchiate cephalopods of the Japanese and adjacent waters'' was published posthumously in 1929, and was based largely on his studies of the cephalopod collections of the Zoology Department of the "Tokyo University Museum", many of which he collected himself. The species ''Sebastodes sasakii'', ''Octopus sasakii'' and ''Sepia sasakii Sepia may refer to: Biology * ''Sepia'' (genus), a genus of cuttlefish Color * Sepia (color), a reddish-brown color * Sepia tone, a photography technique Music * ''Sepia'', a 2001 album by Coco Mbassi * ''Sepia'' (album) by Yu Takahashi * "S ...'' are among the taxa that bear names that honour Sasaki. References {{DEFAULTS ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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