Neodoris chrysoderma - found by mistake?

January 30, 2006
From: Paul McLeod

Dear Dr Bill,

First let me say that as a keen Sydney diver, photographer and nudi afficionado, I have found your site to be the most authoritive and informative I have found anywhere.

Locality: Kurnell, Sydney, NSW, Australia. Depth: 10 metres. Length: 3 cm
29 January 2006. tidal bay, 500 meters from open ocean. Photographer: Paul McLeod

Time for me to contribute. I was experimenting with my supermacro photo setup at Kurnell (Sydney) recently, and my dive plan was nothing more than to prowl the sea floor to photograph small animals and plants so I could refine the manual focus length I have set up with a plastic rod attached to my camera tray. Long story short, I photographed what I thought at the time was a small yellow and white plant as a convenient check on my manual focus. When I pulled the image up on the computer and looked at it closely, I suspect I might have accidentally photographed a nudibranch I have not seen before around Sydney.

Over the years I have learned to be humble, and if someone tells me that this nudi is actually more common around Sydney that the black-margined glossodoris, but ignorant divers such as myself swim right past this nudi believing it to be a boring plant, then I will take my medicine with a smile.

Any clues?
Paul McLeod
Annandale, Sydney

McLeod, P.G., 2006 (Jan 30) Neodoris chrysoderma - found by mistake?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Paul,
You are not the first person to discover that they had photographed something interesting when they looked at their photos. This is Neodoris chrysoderma. It seems to be found all around the southern coasts of Australia, and sometimes is quite common in New South Wales. However it can be quite rare or absent for years at a time.
Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Jan 30). Comment on Neodoris chrysoderma - found by mistake? by Paul McLeod. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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