Tritoniid from Mauritius

December 13, 2002
From: Marina Poddubetskaia

Dear Bill,
I found this tritoniid in Mauritius. It is quite specific:
- peculiar colour pattern on the back
- spotted sides
- gills, rhinophores and oral tentacles / processes tipped with purple

Is it a described species ? It looks like a Marionia species but I don’t know the distinguishing characteristics of this genus. Could you give me them, please? I added to my shots the view of the head. It’s blurred, but enough to see the shape of oral processes.

Pereybere, Mauritius, Indian Ocean [Site: L’aquarium de Pereybere] October 17, 2002. Depth: 10m. Size: about 25mm. Photos: Marina Poddubetskaia - Nembro website

Best wishes,

Poddubetskaia, M., 2002 (Dec 13) Tritoniid from Mauritius. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Marina,
There are quite a few names in the scientific literature but I suspect the descriptions don't give us enough detail to identify them. I can't give you much comfort except to say I am calling it Tritoniid sp. 7.
Best wishes,
Bill Rudman

Rudman, W.B., 2002 (Dec 13). Comment on Tritoniid from Mauritius by Marina Poddubetskaia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


Tritoniid sp. 7