Chromodoris collingwoodi from South China Sea

October 13, 2003
From: Mabel Fang

Hi Bill
Saw this nudi on 7-skies, a wreck in the South China Sea. We were all waiting for some big fish action when my buddy chanced upon it.
Date: 27 Sept 2003
Depth: 120feet
Size: 1 cm

Could you kindly ID it for me?

Thanks.
Mabel Fang

barramundi@ooi-online.com

Fang, M., 2003 (Oct 13) Chromodoris collingwoodi from South China Sea. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11211

Dear Mabel.
This is an interesting find. It's an apparent colour form of Chromodoris collingwoodi which I have seen before. I haven't seen one with the yellow forming a broken submarginal line around the mantle edge. Usually there is a band of yellow spots. However the rest of the colour pattern clearly shows what it is.

Another interesting thing is the partially everted oral tube - the white lump at the front of the head - which shows that it is either feeding or has just been disturbed while feeding. I can't be sure if the dark grey-blue patch its head is on is a sponge or not, but it fits two other photos we have of this species feeding on a dark blue sponge [see message 1, message 1].

I see 7-Skies is a popular dive site in the South China Sea, east of Pulau Aur off the south east coast of the Malay Peninsula. If you can give me a little more than the name of a wreck in future, it would be helpful. I realise at the moment the wreck features prominently in the dive trips of a number of dive charter boats, but it doesn't appear on any normal maps.
Best wishes
Bill Rudman

Rudman, W.B., 2003 (Oct 13). Comment on Chromodoris collingwoodi from South China Sea by Mabel Fang. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11211

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