Nine-limbed octopus gives aquarium a leg up - Mainichi Daily News

[octobot]

[SIZE=-2]Mainichi Daily News[/SIZE]
Nine-limbed octopus gives aquarium a leg up
[SIZE=-1]Mainichi Daily News, Japan - 7 hours ago[/SIZE]
[SIZE=-1]The nine-armed octopus is pictured in Susami, Wakayama Prefecture in this Dec. 25, 2008 file photo. (Mainichi) SUSAMI, Wakayama -- An octopus found off the ...[/SIZE]


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[Tintenfisch]

Looks like the 'extra' arm is a mutation growing about 1/5 of the way up Arm IVR. As Mori said, this could be the result of a regenration/healing site gone awry - I reported a specimen of Onykia (Onykia) robusta in my thesis that also looked like a tiny mutant arm was sprouting from a damaged sucker site (see below - scale bar = 10mm).