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・ Seven Years (album)
・ Seven Years Bad Luck
・ Seven Years in Tibet
・ Seven Years in Tibet (1956 film)
・ Seven Years in Tibet (1997 film)
・ Seven Years in Tibet (disambiguation)
・ Seven Years of Highly Defective People
・ Seven Years of Letters
・ Seven Years Past
・ Seven Years – Ten Weeks
・ Seven Years' War
・ Seven Years' War (disambiguation)
・ Seven's Travels
・ Seven, Come Eleven
・ Seven, They Are Seven
Seven-arm octopus
・ Seven-ball
・ Seven-ball (disambiguation)
・ Seven-banded armadillo
・ Seven-banded wrasse
・ Seven-Branched Sword
・ Seven-card stud
・ Seven-coloured tanager
・ Seven-Day War
・ Seven-deadly-sins law
・ Seven-digit dialing
・ Seven-dimensional cross product
・ Seven-dimensional space
・ Seven-dots glyph
・ Seven-Faceted Blessing


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Seven-arm octopus : ウィキペディア英語版
Seven-arm octopus

The seven-arm octopus (''Haliphron atlanticus'') is one of the two largest known species of octopus; based on scientific records, it has a maximum estimated total length of and mass of . The only other similarly large extant species is the giant Pacific octopus, ''Enteroctopus dofleini''.
The genera ''Alloposina'' Grimpe, 1922, ''Alloposus'' Verrill, 1880 and ''Heptapus'' Joubin, 1929 are junior synonyms of ''Haliphron''.
==Description==

The seven-arm octopus is so named because in males the hectocotylus (a specially modified arm used in egg fertilization) is coiled in a sac beneath the right eye. Due to this species' thick gelatinous tissue, the arm is easily overlooked, giving the appearance of just seven arms. However, like other octopuses, it actually has eight.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Seven-arm octopus」の詳細全文を読む



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