Thuridilla carlsoni from SE Queensland

November 13, 2003
From: Gary Cobb


Hi Bill!
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.
Thanks
Gary Cobb

gary@cobb.com.au

Cobb, 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

Dear Gary,
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.
Cheers
Bill Rudman

Rudman, W.B., 2003 (Nov 13). Comment on Thuridilla carlsoni from SE Queensland by Gary Cobb. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11349

Factsheet

Thuridilla carlsoni

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