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gigantic octopus
An unknown species of gigantic octopus has been hypothesised as a source of reports of sea monsters such as the lusca, kraken and akkorokamui as well as the source of some of the carcasses of unidentified origin known as globsters like the St. Augustine Monster. The species that the St. Augustine carcass supposedly represented has been assigned the binomial names "''Octopus giganteus''" ((ラテン語:giant octopus))〔Verrill, A. E. 1897. Additional information concerning the giant Cephalopod of Florida. ''American Journal of Science'' 4th series 3: 162-163.〕 and "''Otoctopus giganteus''" (Greek prefix: ''oton'' = ear; giant-eared octopus),〔Raynal, M. 1987. Le poulpe colossal des Caraïbes. ''Le Clin d'Œil'', Nice, 16: 21-25. 〕 although these are not valid under the rules of the ICZN.
They are not to be confused with the known giant Pacific octopus, which is a member of the genus ''Enteroctopus'', and can grow to a total length of more than .〔Cosgrove, J.A. 1987. Aspects of the natural history of ''Octopus dofleini'', the giant Pacific octopus. M.Sc. Thesis. Department of Biology, University of Victoria (Canada), 101 pp.〕 The gigantic octopus is assumed to be much larger.
==History==
In 1802, the French malacologist Pierre Denys de Montfort in ''Histoire Naturelle Générale et Particulière des Mollusques'', an encyclopedic description of mollusks, recognized the existence of two kinds of giant octopus. One being the ''kraken octopus'', which Denys de Montfort believed had been described not only by Norwegian sailors and American whalers, but also by ancient writers such as Pliny the Elder. The second one being the much larger ''colossal octopus'' (the one actually depicted by the image) which reportedly attacked a sailing vessel from Saint-Malo off the coast of Angola.
A gigantic octopus has been proposed as an identity for the large carcass, known as the St. Augustine Monster, that washed up in St Augustine, Florida, in 1896. However, samples of this specimen subjected to electron microscopy and biochemical analysis were found to be "masses of virtually pure collagen" and not to have the "biochemical characteristics of invertebrate collagen, nor the collagen fiber arrangement of octopus mantle". The results suggest the samples are "large pieces of vertebrate skin ... from a huge homeotherm".〔Pierce, S., G. Smith, T. Maugel & E. Clark 1995. (On the Giant Octopus (''Octopus giganteus'') and the Bermuda Blob: Homage to A. E. Verrill. ) ''Biol. Bull.'' 188: 219-230.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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