Placida dendritica? from Norway

March 8, 2007
From: Erling Svensen

Hello from Norway
I was diving in the fjords of South Norway near Stavanter (North Sea)  the 4. of March, and at only 1 meter of water I photographed this nudy. Could it be Placida dendritica? The temperature was only 4 degrees Centigrade, rocky bottom and some green seaweed.
Best regards
Erling Svensen

Svensen, E., 2007 (Mar 8) Placida dendritica? from Norway. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Erling,

Unless I have totally missed the plot, this is the 'real' Placida dendritica. If you have a look at the Fact Sheet, and other messages on the Forum, you will see that there are a number of very similar looking species around the world which have been identified as P. dendritica.

In your photos we can see the white-tipped cerata and the concentrtaions of white spots? glands? in the upper half of the rhinophores. The close-up alongside nicely shows that the rhinophores are not a solid tentacular structure but are enrolled. The green branching in the body is the digestive gland - the green being chloroplasts obtained from its algal food.

Best wishes,
Bill Rudman

Rudman, W.B., 2007 (Mar 8). Comment on Placida dendritica? from Norway by Erling Svensen. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


Placida dendritica

Related messages

  1. Re: What does Placida dendritica eat?
    From: Cynthia Trowbridge, November 6, 2002
  2. What does Placida dendritica eat?
    From: Yi Zhang, November 4, 2002
  3. Placida dentritica from the Mediterranean
    From: Jean-Pierre Bielecki, June 20, 2002
  4. Placida dendritica from Scotland
    From: Jim Anderson, June 17, 2002
  5. Placida dendritica from Massachusetts, USA
    From: Alan Shepard, April 19, 2002

Show factsheet and all related messages