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Little arms on long arm octopus


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#1 Alex_Mustard

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Posted 18 July 2012 - 07:14 AM

What are these little arms?

octo.jpg

Pretty sure I've seen them a few times. Will look for a clearer shot.

Alex

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#2 okuma

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Posted 18 July 2012 - 06:42 PM

Fingers?
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If it is so easy every one would be doing it!

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#3 mucktopus

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Posted 19 July 2012 - 11:28 AM

Wow - very interesting! They could be re-growing arms that had been lost to autotomy. Is there a way to crop it and show a little more to the left, so you can see where the other arms grow from the web?

#4 jrosenf

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Posted 19 July 2012 - 12:34 PM

I'm also interested if it's due to the regrowing of arms. Here are two photos of the same individual I shot in 2002 in Anilao including a close-up of its missing arms and what I'm now wondering if is indeed the same phenomenon.

Posted Image

Posted Image

#5 Alex_Mustard

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Posted 19 July 2012 - 02:23 PM

Thanks.

Here are some larger images.

The first is another crop of the original image
BALI11_am-11436.jpg

This is a different photo of the same individual. This time only one of the filaments is visible.
BALI11_am-11401.jpg

Alex

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#6 Alex_Mustard

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Posted 21 July 2012 - 10:35 PM

With no other ideas being suggested, I think that they are regrowing arms is our best hypothesis.

Alex

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#7 Nick Hope

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Posted 22 July 2012 - 03:53 AM

Alex, the cephalopod anoraks on the Tonmo forum may know more.

#8 liquidguru

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Posted 23 September 2012 - 05:20 PM

I saw a Mimic Octopus yesterday with two small front arms, both the same length. I presume they are re-growing too. But strange that it is again the two front arms, not other ones.

Here's some video I made. There are two Mimic's in the video, the 1st one is the one with the two short arms

[vimeohd]50000489[/vimeohd]

Direct Link to Video

Cheers,

Kaj

Edited by liquidguru, 23 September 2012 - 05:24 PM.

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