July 18, 2003
From: Marina Poddubetskaia
Thanks for your comments. The only better photo of the head I have is this one (of the same animal). I hope it would help you.
Note added 15 July 2006: This species has now been named Tambja haidari
Yes it does help. It shows that the dark blue bit I thought might be a large oral tentacle is a fold of the mantle edge. This would suggest your animal is not a species of Roboastra. I suspect its a Tambja, but not a species I am familiar with