Purple Octopus - using citizen science to discover marine interactions
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Hermissenda crassicornis

(Eschscholtz, 1831)

Joel Warburton Can anyone ID this? I think its a Hermissenda Crassicornis, but all the pictures I've seen of those have white ends on the fronds on the back. Anyone know if this is correct? I took it off the Californian coast in August this year.

Jeff Rosenfeld Your ID is correct. The species can be rather varaible, which is especially notable the farther up the coast you go.

Joel Warburton Thanks Jeff!

Andrey Shpatak Japan Sea. Russia. Rudnaya bay. Hermissenda Crassicornis Nikon D700+Tamron 90mm+1,5TC Kenko Oct 2012

Message posted on UWphotographers on 03 Dec 2012
Ken Bondy Family outing

Sylvie Lalane que c est beau j adore

Elly Jeurissen What a cute scene.... :-D

Ron Silver Hermissenda crassicornis

Juergen Kirchmann cool

Pam Murph nice find

Roberto Gruzza Awesome!!!

Malida Alcazar small medium, extra large :)

Susan Demasters Nice capture!!

Robert Schmidt great! i did not know that the underwater life is beautiful as the nature on top. like morro bay sooooooooooo much!

Cyril Hervieu great !!!!!!!

Message posted on UWphotographers on 14 Oct 2013
Stacy Tseng Monterey, California

Ron Silver Hermissenda crassicornis

Message posted on Wetpixel Underwater Photography on 08 Oct 2013
Animalia (Kingdom)
  Mollusca (Phylum)
    Gastropoda (Class)
      Heterobranchia (Subclass)
        Opisthobranchia (Infraclass)
          Nudibranchia (Order)
            Dexiarchia (Suborder)
              Aeolidida (Infraorder)
                Aeolidioidea (Superfamily)
                  Facelinidae (Family)
                    Hermissenda (Genus)
                      Hermissenda crassicornis (Species)
Associated Species