New Polybranchia? in Mediterrean Sea

August 30, 2007
From: Elisabetta Guerrini

Dear Bill,

Please, tell me your opinion about this new friend found in Tirrenian Sea!
I think that it could be a Polybranchia but it sounds really strange for our area and it shows different coloration from all the others I saw in pictures.

Locality: Formiche di Grosseto, 7.2 m, Italy, Tirrenian Sea, 19 August 2007. Length: about 4 cm. Photographer: Elisabetta Guerrini.


Guerrini, E., 2007 (Aug 30) New Polybranchia? in Mediterrean Sea. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Lisa,

I am pretty sure this is Cyerce cristallina, which is a genus closely related to Polybranchia.

Best wishes,
Bill Rudman

Rudman, W.B., 2007 (Aug 30). Comment on New Polybranchia? in Mediterrean Sea by Elisabetta Guerrini. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


Cyerce cristallina

Related messages

  1. Cyerce cristallina from Gallipoli - Lido Pizzo
    From: Fabio Crocetta, October 29, 2008
  2. Cyerce cristallina from Formiche di Grosseto
    From: Elisabetta Guerrini, September 3, 2007
  3. Cyerce cristallina from Croatia
    From: Tom Turk, August 28, 2006
  4. Cyerce cristallina from southern France
    From: Fabien Lombard, July 30, 2005
  5. Cyerce cristallina from Cozumel, Mexico
    From: Jim Lyle, August 29, 2003
  6. Cyerce cristallina? from Florida
    From: Linda Ianniello, January 26, 2002

Show factsheet and all related messages