6/7/2023 0 Comments Bigfin squids![]() The ROV Atalante filmed another Indian Ocean specimen at and 2,576 metres (8,451 ft), in the area of Rodrigues Island, in May 2000. ![]() By comparison with the visible parts of the ROV, the squid was estimated to measure 7 metres (23 ft) with arms fully extended. The long-armed squid observed north of Hawai'i in 2001, showing the extremely large fins of this specimen Ī third video taken from the remotely operated underwater vehicle (ROV) of the oil-drilling ship Millennium Explorer in January 2000, at Mississippi Canyon in the Gulf of Mexico () at 2,195 metres (7,201 ft), allowed a size estimate. In November 1998, the Japanese crewed submersible Shinkai 6500 filmed another long-armed squid in the Indian Ocean south of Mauritius, at and 2,340 metres (7,680 ft). In July 1992, the Nautile again encountered these creatures, first observing one individual two times during a dive off the coast of Ghana at and 3,010 metres (9,880 ft) depth, and then another one off Senegal at 2,950 metres (9,680 ft). The crew of the submersible Nautile encountered a long-armed squid off the coast of northern Brazil,, at a depth of 4,735 metres (15,535 ft). The first visual record of the long-arm squid was in September 1988. However, they did all have large fins, and were therefore named "magna pinna", meaning "big fin". The genus was described from two juveniles and paralarva, none of which had developed the characteristic long arm tips. A was described as Magnapinna atlantica in 2006. Of particular interest was the very large fin size, up to 90% of the mantle length, that was responsible for the animals' common name.Ī single specimen of a fifth species, Magnapinna sp. Researchers Michael Vecchione and Richard Young were the chief investigators of the finds, and eventually linked them to the two previous specimens, erecting the family Magnapinnidae in 1998, with Magnapinna pacifica as the type species. ![]() A), and three more were found in the Pacific ( Magnapinna pacifica). ĭuring the 1980s, two additional immature specimens were found in the Atlantic ( Magnapinna sp. The specimen was illustrated in Alister Hardy's The Open Sea (1956), where it was identified as Octopodoteuthopsis. C) was caught in the South Atlantic, but little was thought of it at the time. In 1956, a similar squid ( Magnapinna sp. Due to the damaged nature of the find, little information could be discerned, and it was classified as a mastigoteuthid, first as Chiroteuthopsis talismani and later as Mastigoteuthis talismani. The first record of this family comes from a specimen ( Magnapinna talismani) caught off the Azores in 1907.
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