October 24, 1999
From: Des Paroz
I spotted this slug on a dive at Toothbrush Island, Wollongong, southern New South Wales, last Sunday (17/10/99).
It was sitting at a depth of about 14m on a wall. Water temp was about 17C - there appears to have been a warm current since the previous week, as temp jumped about 3C.
It looks like a critter referred to be Debelius as Jorunna sp., however it doesn't look at all like the Jorunna sp. on the Seaslug Forum.
Any information would be much appreciated.
firstname.lastname@example.orgParoz, D., 1999 (Oct 24) Is this a Jorunna sp??. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1447
'Jorunna sp.' is just shorthand for 'a species of Jorunna which either is unnamed or I don't know its name'.
In this case your nudibranch is an unnamed species of Jorunna which seems to have quite a wide distribution in the Indo-west Pacific. It usually has a yellow background colour but can be quite white which confuses it with small animals of Jorunna funebris.
I suspect the grey sponge in both the photos is its food. If by chance you actually see it feeding or with its mouth in an excavated hole, a photo would be very valuable evidence.
Jorunna? from West Papua
From: Jim Anderson, May 24, 2007
Jorunna sp. 2 from Anilao, Philippines
From: Ray Izumi, June 13, 2003
Jorunna from Durban, South Africa
From: Kirsty Miller, June 9, 2001
Jorunna sp. 2 from South Africa
From: Valda Fraser, July 12, 2000
Jorunna sp. 2 in Sydney
From: P.Zylstra & H.Rothenfluh, June 20, 2000
Re: Is this a Jorunna sp??
From: Erik Schloegl, November 1, 1999
Crimora sp? from South Africa
From: Ernest C.J. Seamark, October 25, 1999