November 6, 2001
From: Bernard Picton
I think the top picture in Baki's spawn message is probably Haminoea (?navicula). The eggs in rows like this and shape of the coil are exactly the way I've seen the eggs of this species, it normally climbs up away from it's muddy substratum to lay the spawn on a prominent plant or animal.
The lower right spawn could be of almost any large Dorid, Geitodoris planata lays eggs with this sort of wavy top edge and so does Atagema gibba. In the Mediterranean there are a lot of other candidates.
In a separate message I've sent unpublished in situ photos of Atagema gibba and its spawn coil.
firstname.lastname@example.orgPicton, B.E., 2001 (Nov 6) Baki's Egg coils . [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/5629
Interesting to hear that the European Haminoea has such a 'flattened' egg coil. The common New Zealand species, Haminoea zelandiae, with which I am most familiar, has a soft jelly-like, sausage shaped egg mass containing a spiral string of bright yellow eggs.
Huge egg mass - Doris montereyensis ?
From: Jackie Hildering, August 14, 2007
Pleurobranchus forskalii eggs?
From: Brian James, May 3, 2005
Pink tiny nudibranch and concentric rings
From: Francesca Riolo, March 25, 2005
Galapagos egg ribbon
From: Julianne Parolisi, January 2, 2005
Nudibranch eggs on a fish
From: Chris Grossman, August 4, 2004
Unknown egg mass from Turkey
From: Erwin Koehler , October 8, 2002
Nudibranch Egg masses
From: Laurette Hanekom, July 19, 2002
From: Alice Lee, July 18, 2002
Platydoris formosa? - egg ribbon
From: Todd Garthwaite, June 27, 2002
Do Sea Slugs lay eggs?
From: Emily, March 13, 2002
A strange place to lay eggs
From: Mary Jane Adams , January 25, 2002
Whose eggs are these?
From: Baki Yokes, November 2, 2001
Are these eggs?
From: Beniamino Usai, October 23, 2001
number of eggs
From: Jeanette McInnes, October 7, 2001
Opisthobranch egg masses
From: Phanor Montoya, October 7, 2000
How many eggs do sea slugs lay?
From: MIKE, October 4, 2000
Eggs to identify
From: Valda Fraser, February 21, 2000