(delle Chiaje, 1828)
Widespread in Mediterranean - Italy, France, Spain, Cyprus.
Upper: Cap d'Antibes, 17m., France. 17 July 2003. Photo: Jean-Pierre Bielecki. Lower: Italy, summer 1999, depth 15m. Photo: Wolfgang Seifarth.
Described as having whitish spots surrounded by white oval rings. Reported to feed on the sponges Plakina trilopha and Plakinastrella copiosa.
Cattaneo-Vietta, R. (1986) On Pleurobranchomorpha from Italian seas (Mollusca: Opisthobranchia). The Veliger, 28(3): 302-309.
Rudman, W.B., 1999 (September 23) Berthella ocellata (delle Chiaje, 1828). [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/bertocel
August 20, 2008
From: Dominique Horst
I'm sharing a few pictures about Berthella ocellata which I found recently for the first time.
Locality: Antibes, 8 m, France, Mediterranean sea, 14 August 2008. Length: 40 mm. Photographer: Dominique Horst.
email@example.comHorst, D., 2008 (Aug 20) Berthella ocellata from French Mediterranean. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/21809
August 25, 2006
From: Christian Kowalewski
I found this pleurobranch while I was just making a night tour walking around the rocky areas at low tide; there are lots of of more or less deeper pools (a few cm to a few meters). I found this single individual in about 2 m.
Locality: Tenerife Island (Canary Islands), 2 m, Spain, Atlantic Ocean, 14 August 2006, intertidal pools. Length: 5 cm. Photographer: Kowalewski Christian.
firstname.lastname@example.orgKowalewski, C.J., 2006 (Aug 25) Berthella ocellata from the Canary Islands. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/17570
This is Berthella ocellata
May 11, 2006
From: Vasilis Athanasopoulos
If this is a Berthella ocellata, then I guess the 'Distribution' info on the main page of this species should be changed to include Easter Mediterranean too, since I found this species in Cyprus. I think that the opaque white rings, visible around the edge of the translucent clear spots, are characteristic. Am I right/wrong?
Locality: Protaras, 10m, Cyprus, Mediterranean, 02 April 2006, algae covered rocks. Length: 7-8cm. Photographer: Vasilis Athanasopoulos.
email@example.comAthanasopoulos, V., 2006 (May 11) Berthella ocellata from Cyprus. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16581
Yes this is Berthella ocellata. The name of this species comes from the latin ocellus meaning a 'little eye' usually formed by a ring or rings of different colours. So yes the white rings are indicative of the species. However sometimes the rings are absent and only the colorless rounded tubercle in the middle remains.
I am pretty sure Berthella ocellata has not been recorded in the eastern Mediterranean but sometimes records are published in local publications without a wide distribution, and so difficult to find. I am sure however that someone will tell us if B. ocellata if I have missed an earlier record. It would be surprising if it did not occur in the eastern Mediterranean but it is always good to get confirm these things.
October 21, 2005
From: Francis Bronnec
I believe this slug is Berthella ocellata but I've never seen such a whitish specimen.
Locality: Frontignan, France, Mediterranean Sea. Depth: 12 m. Length: 50 mm. 15 september 2005. Photographer: Francis Bronnec
Is it really this species.
Thanks for your help,
firstname.lastname@example.orgBronnec, F., 2005 (Oct 21) Berthella ocellata from Mediterranean France. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/15066
From the shape of its head, with enrolled rhinophores and grooves along the edges of the oral veil, this is clearly a pleurobranch. Although very white, I would assume that it is Berthella ocellata. Hopefully a local expert can confirm that for us.
August 10, 2003
From: Jean-Pierre Bielecki
Here is a Berthella ocellata found during night dive the 17 July 2003, 17m deep. Cap d'Antibes- France
email@example.comBielecki, J-P., 2003 (Aug 10) Berthella ocellata from France. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/10535
It seems in larger animals the white rings, which give the species its name, become less obvious
July 17, 2002
From: Marina Poddubetskaia
Could you confirm, please, the ID of this Berthella ocellata found under a stone during the 'Sea Slugs Training Course' in Cerbere.
Date: July 05, 2002
Location : Cerbere, France
Site: Les Chambres
Size: about 5cm
firstname.lastname@example.orgPoddubetskaia, M., 2002 (Jul 17) Berthella ocellata from French Mediterranean. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/7476
Yes this is Berthella ocellata. The opaque white rings which are a characteristic part of its colour pattern are only faintly visible around the edge of the translucent clear spots.
September 23, 1999
From: Erwin Koehler
Again a photo taken by Wolfgang Seifarth this summer in Italy, depth 15m. Is it Berthella ocellata (delle Chiaje, 1830)?
Medslugs.Koehler@t-online.deKoehler, E., 1999 (Sep 23) Berthella ocellata from Mediterranean. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1358
I have never seen this species alive or in photographs, but from published accounts I am pretty sure your identification is correct. After the variability of Berthella stellata, it's nice to see a Berthella with a distinctive colour pattern.
Any chance of a few more locality details and size perhaps?