What kind of octopus is this?
Posted 17 July 2012 - 03:29 PM
Posted 17 July 2012 - 05:44 PM
Edited by liquidguru, 18 July 2012 - 05:17 AM.
Posted 18 July 2012 - 05:08 AM
Posted 18 July 2012 - 10:29 PM
Edited by jkane, 18 July 2012 - 10:47 PM.
Posted 19 July 2012 - 01:05 AM
Do wonderpus and mimics spend time burrowed in the sand? There are a couple of octopus that I know of that do...the long arm and short arm sand octopus. The short arm sand octopus was described just a few years ago, and I believe the long arm sand octopus may have yet to be described. I've seen both in Hawaii, and your pic looks somewhat like the undescribed long arm sand octopus peeking out of the sand as seen in this pic - http://sealifeimages...8kbYH. Another similarity is the yellow breathing tube (for lack of the correct term). An expert on these guys, and who was involved with describing the short arm sand octopus, is Crissy Huffard of UC Berkeley. I don't know if she's still associated with Berkeley, but a little Google work may locate her.
Mimics and Wonderpus live in burrows in the sand, and this, is definitely a mimic Octopus. I'm fortunate to have seen many many Mimics and Wonderpus over the last three years and I'm 100% certain. On top of that, Liberty, a dive guide here who has been diving in Lembeh for over 16 years, immediately said Mimic too
Mimics and Wonderpus can be difficult to differentiate, but it's easy enough when you know what to look for. The bands/stripes on a Mimics arms are fairly even light and dark. On a Wonderpus, they have the the bands/strips, but the light band, rather than being solid consists of a broad central band, then two lines on the outside. Surrounding the eyes on a Mimic there are dots above the eye and a white band under the eye (as in the photo above). On Wonderpus there are dots all around the eye, no white stripe. On top of the eyes the Mimics have a long pointy bit (my official scientific term) and the Wonderpus have a short stubby pointy bit. When you see them move, that also have completely different actions. The Mimics and Wonderpus tend to also like different habitats (at least here in Lembeh), with the Mimics preferring black sand sites, and the Wonderpus on more rubbly/coral sites. And finally, though easier to see with video lights, the Wonderpus is a much more orange colour. The Mimic is a darker/black colour
Posted 19 July 2012 - 03:04 AM
Posted 19 July 2012 - 11:16 AM
Again- nice shot and happy diving!!
Posted 20 July 2012 - 12:51 AM