Re: Caribbean Umbraculum - mating

April 29, 2003
From: Dee Scarr

Hi Bill,
Don't I wish I could have been the intrepid naturalist who got the information on Umbraculum mating, but we just didn't feel comfortable being that intrusive ... I had to go off-island for a week immediately after that dive, and since my return I've only found one individual (last night, after several daytime searches), and no eggs. I'll be keeping alert, though.

It's interesting that I've only seen these critters feeding at night, but the mating was taking place in the daytime. Great photo of the egg laying!

I've only seen them eating one type of sponge, which I think is Holopsamma helwigi. Is the purpose of the pustules/warts known?
Sorry -- and thanks,
Dee Scarr

Scarr, D., 2003 (Apr 29) Re: Caribbean Umbraculum - mating. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Thanks Dee,
The egg laying photos are great - but I'm still waiting for the 'intrepid naturalist'. Concerning the pustules on the body. As I guess I would say it is a form of camouflage, but I'm not sure how you would test such an hypothesis
Best wishes,
Bill Rudman

Rudman, W.B., 2003 (Apr 29). Comment on Re: Caribbean Umbraculum - mating by Dee Scarr. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Related messages

  1. Umbraculum from Venezuela
    From: Virginia Malpica, August 5, 2006
  2. Umbraculum from Turkey
    From: Charles McGurk, July 7, 2006
  3. Umbraculum mediterraneum from Croatia
    From: Andrej Jaklin, May 16, 2006
  4. Umbraculum mediterraneum
    From: Luigi Montevecchi, January 26, 2005
  5. Umbraculum f rom Florida
    From: Robert Shearer, July 16, 2004
  6. Umbraculum mediterraneum from Cape Verde Ids
    From: Gérard Breton, September 5, 2003
  7. Caribbean Umbraculum - mating
    From: Dee Scarr , April 7, 2003
  8. Umbraculum umbraculum? from Turkey
    From: Haluk Akbatur, November 15, 2002
  9. Umbraculum f rom Florida
    From: Maris Kazmers, September 12, 2002
  10. Umbraculum mediterraneum from France
    From: Marina Poddubetskaia, July 29, 2002
  11. Umbraculum in Florida
    From: Randy Jordan, June 1, 2002
  12. Re: Umbraculum - how many species?
    From: Angel Valdés, February 19, 2000
  13. Re: Umbraculum - how many species?
    From: Erwin Koehler, February 17, 2000
  14. Umbraculum - one or two species?
    From: Erwin Koehler, February 16, 2000
  15. Umbraculum mediterraneum from Canary Ids
    From: M.Thorpe & K. Nagengast, February 13, 2000
  16. I need help with Umbraculum mediterraneum
    From: Roberto Moresco, January 14, 1999

Show factsheet and all related messages