Syphonata geographica eggs

February 25, 2008
From: Leanne & David Atkinson

Hi Bill,
These photos show more of the Syphonata geographica aggregation [see message #21226] and the egg mass. Are they being laid in the photo we weren't sure? One of the earlier postings showed eggs like this near the Syphonata geographica. There is also a Halophilaseagrass leaf close by.

Locality: Fly Point, Port Stephens - Great Lakes Marine Park, Port Stephens, 8 metres, New South Wales, Australia, Pacific, 24 November 2007, Sandy bottom with scattered sponges, ascidians, gorgonias and seagrasses. Length: Approximately 130 mm. Photographer: Leanne & David Atkinson.

Leanne & David Atkinson

Atkinson, L. & D., 2008 (Feb 25) Syphonata geographica eggs. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Leanne & David,

I suspect these are the egg strings of Syphonota, but as they look quite similar to many other sea hares we can't be 100% sure unless we catch them in the act of laying.

Best wishes,
Bill Rudman

Rudman, W.B., 2008 (Feb 25). Comment on Syphonata geographica eggs by Leanne & David Atkinson. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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