Hawaiian Ids, Marshall Ids, Guam, New Caledonia, Papua New Guinea, tropical Australia.
Lagoon between mainland and Récif de l'Infernet, off Koumac, New Caledonia, 20°35.6'S, 164°15.2'E, 10m, Sand and grey mud, 28 October 1993, 21mm long alive. Photo: Bill Rudman.
The very characteristically coloured elysiid is known from both the east and west coasts of Australia (Wells & Bryce, 1993; personal observations). I have found it in New Caledonia, and Gosliner has recorded it from other parts of the western Pacific. It is characterised by the clusters of deep green marks on a dull cream background. The rhinophores are cream except for green patterning at the base and a brownish orange tip.
•Gosliner, T.M. (1995) The genus Thuridilla (Opisthobranchia: Elysiidae) from the tropical Indo-Pacific, with a revision of their phylogeny and systematics of the Elysiidae. Proceedings of the California Academy of Sciences, 49(1): 1-54.
Rudman, W.B., 2000 (June 19) Thuridilla carlsoni Gosliner, 1995. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/thurcarl
February 12, 2008
From: Mirjam Broos
I really have no clue. The rhinophores are pretty big. Can you help me out?
Locality: Tulemben wreck, 5 metre, Indonesia, Bali, Indian ocean, 02 april 2007. Photographer: Geert Prast.
firstname.lastname@example.orgBroos, M., 2008 (Feb 12) Thuridilla carlsoni from Indonesia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/21275
When you see an animal with only one set of rhinophores like this you can be pretty sure it is a sacoglossan sea slug not a nudibranch. This is Thuridilla carlsoni
February 5, 2008
From: Kristin J Anderson
Found this one in Exmouth Gulf on Saturday. I do not see a Ningaloo Reef or Western Australia record so far on the forum, so thought I'd pop it in here for you.
Locality: Ningaloo Reef, 8m, Western Australia, Exmouth Gulf, 19 January 2008, tidal, silty, coral/limestone structures. Length: 1-1.5 cms. Photographer: Kristin Anderson.
email@example.comAnderson, K.J., 2008 (Feb 5) Thuridilla carlsoni - Ningaloo Reef Western Australia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/21345
December 30, 2006
From: Mike Krampf
Not a lot of posting on the site so I thought I'd share this picture. It was taken at Budo Point dive site off Sulawesi on a night dive.
Locality: Dive Site - Budo Point, 45 ft, Sulawesi, Indonesia, Celebes Sea, 21 October 2006, Fringing reef. Length: 2 cm. Photographer: Mike Krampf.
Not to diverge to far, can you recommend a website that helps with identifying flatworms?
firstname.lastname@example.orgKrampf, M., 2006 (Dec 30) Thuridilla carlsoni from Sulawesi. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/18628
Thanks for this record. I've added a close-up alongside to draw attention to the green patches on the parapodia. They are not pigment spots but 'gardens' of chloroplasts obtained from the green algae this animal feeds on. Have a look on the solar-powered slugs for back ground information.
Have a look at the flatworm Fact Sheet for a link to a good page.
May 3, 2005
From: Roberto Sozzani
I send this photo of Thuridilla carlsoni because there are none from Indonesia in the Forum.
Locality: Sangeang island, Indonesia. Depth: 15 metres. Length: 10 mm. June 2003. Sandy slope. Photographer: Roberto Sozzani
email@example.comSozzani, R., 2005 (May 3) Thuridilla carlsoni from Indonesia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/13675
November 13, 2003
From: Gary Cobb
Please find attached a photo I took while on a dive here at Wait-a-while off Mooloolaba, Queensland, Australia, 20 degree water, 14m depth, length about 10mm. Could these be Thuridilla carlsoni? While on the search I found two animals about 20m apart. I was trying to focus on the little critters and found the tops of their back appeared fuzzy! Why is this? Are they common to this area? This is the first time I have ever seen them.
firstname.lastname@example.orgCobb, G., 2003 (Nov 13) Thuridilla carlsoni from SE Queensland. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11349
Yes this is Thuridilla carlsoni. I don't know if this species is ever common. We don't know a lot about it, and there are not that many records of it, but that could be because it lives in 'weedy' places rather than more spectacular places where corals and other more photogenic organisms abound.
I'm afraid the fuzzy edges are a focussing problem. I'm afraid both the human eye and automatic focussing systems find it easier to focus on more contrasty parts of an image like the green specks, than the pale rounded edge of the parapodia.
June 20, 2000
From: Erwin Koehler
This one is from the Philippines, Negros Oriental Is., divesite "Sibulan housereef",
March 2000, depth 15 m, size 2 cm.
This photo is by Fred Vogt.
Medslugs.Koehler@t-online.deKoehler, E., 2000 (Jun 20) Thuridilla carlsoni from Philippines. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/2599
This is Thuridilla carlsoni Gosliner, 1995.