Jorunna pantherina from Sydney

April 11, 2007
From: Michael Clarke

Hi Bill,
We found this little one while exploring rock pools at Le Perouse.

We believe it is from the Atagema family but have looked through your list and can't fine one that is green. Could it be a local colour variation of the Atagema albata?

Locality: Rock Pool, On land, Australia, Pacific, 01 April 2007, Rock Pool . Length: 1 inch. Photographer: Michael Clarke.

We also noticed after taking the photos that it has eggs.

Thanks for your help.
Laura & Michael

Clarke, M.W., 2007 (Apr 11) Jorunna pantherina from Sydney. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Michael,

Do you mean Atagema osseosa ? There are a number of dorid groups with a bristly mantle like this. Your animal is Jorunna pantherina. Species of Jorunna have a much softer skin than species of Atagema. Looking at your photo, it looks like your animal has a bit of skin partly detached at the front, which would support my Jorunna identification - although I wouldn't recommend the technique as a regular means of identification.

As you will see on the Fact Sheet and associated messages, Jorunna pantherina is quite variable in colour and a good match with the sponges it is found on.

Best wishes,
Bill Rudman

Rudman, W.B., 2007 (Apr 11). Comment on Jorunna pantherina from Sydney by Michael Clarke. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


Jorunna pantherina

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