August 9, 2000
From: Peter H. van Bragt
Hallo Bill and Lucas,
The determination has been confirmed by Bernard Picton and Rob Dekker. It is indeed Hermaea bifida. I have attached some more pictures of this particular individual. After it was collected it produced a very typical smell. I would describe it as being very strong, unpleasant and acidic. First I thought that the smell came from the plastic food container, in which it was brought to me, and due to possibly remaining food smells. But know I understand that H. bifida can produce this extrme and unpleasant smell. The specimen on the videograph was found on July 30, 2000 at the Zeelandbrug, Oosterschelde, the Netherlands.
The enclosed pictures are from this specimen, which is the same as the one on the videograph that was send earlier.
Today I received a message from some other divers with photographic proof that at the same location two days earlier the same species was found. It is not clear if it is the same animal or if more indivuduals are present. If I get permission from the person who made these pictures I will send them to you as well.
The last couple of years we have found new or rare species of nudibranchs in Dutch coastal waters, and in most cases more than one individual was spotted.
With greetings from the Netherlands,
Peter H. van Bragt
van Bragt, P.H., 2000 (Aug 9) Re: new species for the Netherlands????. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/2855
I am always a bit hesitant about attempting to identify Atlantic species, so I am glad I didn't lead you astray. Not that it will make me any more confident in trying to identify large flat dorids however.
You can clearly see the enrolled rhinophores anf the branching digestive gland duct in the cerata. I am intrigued by the acid smell. Does anyone know if the chemistry of the secretion has been studied? I seems like it might be an interesting story.
Hermaea bifida - Norway
From: Bjørnar Nygård, April 9, 2010
Hermaea bifida? from the Scapa Flow
From: Stefanie Buell, April 24, 2008
Hermaea bifida from the Scottish west coast.
From: Jim Anderson, May 26, 2005
Hermaea from Mediterranean
From: Jean-Pierre Bielecki , May 26, 2001
Hermaea bifida from France
From: Jean Pierre Bielecki, February 7, 2001
More photos of Hermaea bifida
From: Peter H. van Bragt , September 30, 2000
Re: Hermaea bifida from the Netherlands????
From: Juan Lucas Cervera, August 25, 2000
Re: A new species for the Netherlands????
From: Juan Lucas Cervera, August 6, 2000
A new species for the Netherlands????
From: Peter H. van Bragt, August 5, 2000