March 15, 2010
From: Leanne and David Atkinson
Concerning message #23267:
Following our earlier message [#23328] here are some more photos of what Neville Coleman is calling Armina magna. We have included a photo of the underside of one from a previous dive to help with identification. One of the photos shows a small Dermatobranchus on the same Sea Pen skeleton as they also enjoy feeding on them. It gives a great size comparison.
Locality: The Pipeline, Nelson Bay, Port Stephens, 8metres, New South Wales, Australia, Pacific Ocean, 11 December 2009, Sandy silty bottom with sea pens, sponges, ascidians, gorgonias, soft corals, hydroids and seaweed.. Length: 120mm approximately. Photographer: Leanne and David Atkinson.
Hope these are of interest.
Leanne & David Atkinson
Atkinson, L. & D., 2010 (Mar 15) Armina magna? from Port Stephens, N.S.W .. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/23329
Thanks Leanne and David,
Strange things seem to be happening in Port Stephens with an Armina feeding on a soft coral colony [message #4] and now a Dermatobranchus feeding on a sea pen. I don't suppose the small animal is a juvenile Armina?