Purple Octopus - using citizen science to discover marine interactions
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Halgerda dalanghita

Fahey & Gosliner, 1999


Shane Siers Gary Cobb quickly helped me with an ID, so maybe I'll try a few more... ~40mm, sponge-encrusted tunnel wall at ~2m deep, Guam.

Shane Siers Looks like a Halgerda to me, but can't figure the species.

Shane Siers Gary Cobb, any idea on this one?

Gary Cobb No worries! This is apale colour form of Halgerda dalanghita Fahey & Gosliner, 1999

Shane Siers Here's the first in what promises to be a long series of videos of nudibranchs and other sea slugs from the Philippines. Just a taste of the bizarre and vibrant biodiversity from some of the world's most endangered reefs and marine habitats... In this video, from Anilao and Puerto Galera: Tritonia sp., Dermatobranchus sp., Eubranchus sp., Sakuraeolis nungunoides, Hypeslodoris krakatoa, Ardeadoris averni, Atagema cf spongiosa, Halgerda dalanghita, Glossodoris rufomarginata, Ceratosoma gracillimum and Marionia sp. www.macronesia.net www.facebook.com/macronesia.net

Delos Reyes Eddie amazing shots

Shane Siers Thanks, Delos.

Shane Siers Thanks for the likes, friends.

Lindz Warren This looks like it would be great but I have a slow connection here. Any chance of a lower resolution version? :-)

Elly Jeurissen Awesome footage! Thanks for sharing, Shane. Looking forward to the next part(s) :-)

Shane Siers Lindz, my video host service has lower-res versions for slower connections, it is supposed to sense your speed and provide the right version. But at some point slow is too slow, nothing to be done about it on my end, I'm afraid. I hope you'll try again, maybe at a different time of day when fewer people are sharing your bandwidth.

Eric Fly Awesome vid man. You shoot the best. I miss the hunt.

Shane Siers We miss you, too, dude. I think Dave's having a hard time finding buddies...

Erwin Koehler Halgerda? from Anilao, Philippines taken by Gordon Tillen, it looks like a strange variant of Halgerda dalanghita Fahey & Gosliner, 1999

Erwin Koehler maybe this is Halgerda paliensis (Bertsch & Johnson, 1982) which should be endemic to Hawaii

Taxonomy
Animalia (Kingdom)
  Mollusca (Phylum)
    Gastropoda (Class)
      Heterobranchia (Subclass)
        Opisthobranchia (Infraclass)
          Nudibranchia (Order)
            Euctenidiacea (Suborder)
              Doridacea (Infraorder)
                Doridoidea (Superfamily)
                  Discodorididae (Family)
                    Halgerda (Genus)
                      Halgerda dalanghita (Species)
Associated Species