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It Has Been Discovered that Male Octopuses Desperately Protect the One Arm They Need for Mating.

Summary by GIGAZINE
Mature male octopuses have a specialized "hectocotylus" for transferring spermatophores containing sperm. Research by Keijiro Haruki and colleagues at Nagasaki University has revealed that a small octopus called the dwarf octopus avoids the risk of losing its hectocotylus.
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Mature male octopuses have a specialized "hectocotylus" for transferring spermatophores containing sperm. Research by Keijiro Haruki and colleagues at Nagasaki University has revealed that a small octopus called the dwarf octopus avoids the risk of losing its hectocotylus.

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GIGAZINE broke the news on Tuesday, April 28, 2026.
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