Melibe mirifica from Indoneisa

March 19, 2004
From: Patricia Danna

Note added 22 October 2008: This animal, previously identified on the Forum as Melibe mirifica, is almost certainly not that species, which I now consider to be a synonym of M. japonica. See message [#21985].
Note added 24 October 2008: It is most probably a colour form of M. viridis - see message [#21988]

Dear Bill
I'd be most grateful if you could help me identify the species of this Melibe.

Could these eggs be from the Melibe?

Photos: Bali, Indonesia. Depth 7m. Length:15 to 20 cm. November 2003. [#c28]

Patricia Danna

Danna, P., 2004 (Mar 19) Melibe mirifica from Indoneisa. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Patricia,
From the shape and colour of the cerata I would say this is Melibe mirifica. I am not sure whether the oral veil is damaged, but it certainly looks a bit peculiar. Concerning the possible egg ribbon. It certainly looks like it could be the egg ribbon of a Melibe if you compare it with an earlier message on the egg ribbon of Melibe engeli [#9356] In that message I suggested that the spiral was a second example of a species of Melibe with dextral spiralling of the egg ribbon [clockwise from the centre]. Your egg ribbon certainly coils the same way as M. engeli but I am not sure whether this can be considered clockwise [dextral] or anticlockwise [sinistral] as I don't know where the ribbon starts and ends. Did the animal produce the anchoring thread first and then produced the coil, or did it first produce the long coil abd then anchor it in the sand? If the anchor came first then the spiral is anticlockwise, but if the anchor was produced last then the coiling is clockwise. It is interesting that Hydatina physis another sand-dwelling opisthobranch appears to produce its egg ribbon and carry it around until its is all laid before anchoring it in the sand [see message #12032]. This suggests that the idea of Melibe producing the long ribbon before anchoring it is a reasonable suggestion. It will be interesting to see if anyone has any photos or observations to clarify the situation.
Best wishes
Bill Rudman

Rudman, W.B., 2004 (Mar 19). Comment on Melibe mirifica from Indoneisa by Patricia Danna. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


Melibe viridis

Related messages

  1. Melibe viridis from South Africa
    From: Valda Fraser, November 20, 2009
  2. Re: Melibe viridis in East Timor
    From: Brian Francisco, November 20, 2009
  3. Melibe viridis from Singapore
    From: Toh Chay Hoon, October 31, 2008
  4. Is this a Melibe?
    From: Ron Yeo, October 27, 2008
  5. Melibe viridis from Lembeh Straits
    From: Mark Atwell, October 24, 2008
  6. Melibe sp. from Thailand
    From: Lawrence Neal, October 24, 2008
  7. Re: Melibe viridis laying eggs
    From: Teresa Zuberbühler, June 11, 2008
  8. Re: Melibe viridis - edge of the oral hood
    From: Teresa Zuberbühler, June 6, 2008
  9. Melibe viridis laying eggs
    From: Teresa Zuberbühler, June 5, 2008
  10. Sea slug with paddles?
    From: Annabelle Sandes, November 30, 2007
  11. Melibe mirifica from Sulawesi
    From: Ken Tucker, June 18, 2007
  12. Melibe viridis from Davao Gulf
    From: Carlos R. Munda, May 25, 2007
  13. Sweet-smelling Melibe from South Korea
    From: Grace N. Palmos, November 7, 2006
  14. Melibe viridis in East Timor
    From: Brian Francisco, November 2, 2006
  15. Melibe viridis from Buton Island, Banda Sea
    From: Linda Ianniello, December 3, 2005
  16. Melibe from the Gulf of Kutch, India
    From: Arpit Deomurari, July 1, 2005
  17. Melibe from the Mediterranean
    From: Katerina Tzouvali & Dimitris Pettas, March 3, 2005
  18. Melibe viridis ? from the Philippines
    From: Erwin Koehler, December 18, 2003
  19. Melibe? from Japan
    From: John Perry, July 29, 2001
  20. Melibe mirifica from Papua New Guinea
    From: Mary Jane Adams, September 21, 2000
  21. A Melibe? from Papua New Guinea
    From: Alan M. Grant, January 7, 1999

Show factsheet and all related messages