Polycera sp. 1.
Kerama Is, near Okinawa, Japan, 3-8m on bryozoan. 4.5 to 5mm long, June 1999. PHOTOS: Atsushi Ono.
Found laying eggs on a common bryozoan at Kerama Island, possibly Tricellaria or Scrupocellaria sp. See Atsushi Ono's message below.Authorship details
Rudman, W.B., 1999 (July 6) Polycera sp. 1. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/polysp1
August 6, 1999
From: Atsushi Ono
Here is a photo of Polycera sp.1 on the Bryozoa with their egg mass.
firstname.lastname@example.orgOno, A., 1999 (Aug 6) Egg mass of Polycera sp. 1. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1159
Thanks for the photo. It would be nice now to find the egg masses of Polycera sp.2. If we are lucky they may be different in shape, colour, or size of eggs.
July 7, 1999
From: Atsushi Ono
I found these Polyceridae species. They are similar to Gymnodoris. Their size 4.5 to 5mm.
Any ideas as to the identification?
I found them at 3 to 8m depth at Kerama Is. One was attached to Bryozoa.
Yesterday I found their eggs ! so they are adult, and common species ! They lay their eggs on a common bryozoan at Kerama Island which I identify as Tricellaria or Scrupocellaria sp. This Bryozoa I found "Coral Reef Animals of Indo-Pacific" No.902. It's easy to find this polycerid in this Bryozoa.
Their eggs' color is orange, but at that time I did diving guide for my guests, I could not take a photograph.
email@example.comOno, A., 1999 (Jul 7) Polycera from Kerama Island, Japan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1022
There are a lot of small polycerids in the tropical western Pacific without names at present. It is very interesting that you found these laying eggs as it suggests that they are adults rather than juveniles. I have had a look at species described by Baba from Japan, but it doesn't seem to have been found by him.