Roboastra gracilis from Indonesia

September 21, 2007
From: Edward F Dixon

Bill and all --

Another from my Wakatobi trip. I believe, based on looking at a lot of pics, it's Roboastra gracilis ... but it's very slender compared to other pics, and the orange spots are barely visible on this specimen. Maybe a juvenile?

Locality: Wakatobi, 40 feet, Indonesia, Banda Sea, 31 October 2007, Sandy bottom. Length: > 2 inches. Photographer: E.F. Dixon.

Edward F Dixon

efdixon@yahoo.com

Dixon, E.F., 2007 (Sep 21) Roboastra gracilis from Indonesia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20693

Dear Ed,

This is a perfectly acceptable R. gracilis. They tend to 'fatten up' when they are sitting still, and because they are so slender we often unconsciously wait until they shorten a bit or turn a little so they fill the photo frame better. The brightness of the yellow spots is quite variable, as is the 'blueness' of the gills and rhinophores.

Best wishes,
Bill Rudman

Rudman, W.B., 2007 (Sep 21). Comment on Roboastra gracilis from Indonesia by Edward F Dixon. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20693

Factsheet

Roboastra gracilis

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