September 15, 2005
From: Corey Whisson
We recently collected several specimens from trawls at Exmouth Gulf and Shark Bay, north-western Australia. I am having trouble identifying them - mainly due to their size. Unfortunately these are preserved photos.
Locality: Exmouth Gulf (11 m, 4 August 2004), and Shark Bay, (20 m, 25 September 2003), Western Australia, Australia. Lengths: Exmouth (90 mm), Shark Bay (110 mm). Trawled. Photographer: Corey Whisson
Both animals have characteristic chocolate brown blotches on their ventral side. These appear to form two circles, with the inner circle nearest the foot having smaller sized blotches. Coupled with this, is the presence of brown speckles on the sides of the foot of the smaller [EG] (90 mm) Exmouth Gulf animal. The larger [SB ] (110 mm) Shark Bay animal has a white foot, no brown speckles. On both animals there seems to be paired black blotches in the middle of the mantle on the dorsal side.
Whisson, C.S., 2005 (Sep 15) Platydoris ellioti - North Western Australia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14577
I am pretty sure this is Platydoris ellioti. This genus was recently reviewed (Dorgan, Valdes & Gosliner, 2002) and although the original description of this species lacked much anatomical detail, the external features and colour pattern seem fairly constant. In life your animal the underside of the mantle, and the foot, would have had a yellow or orange yellow background colour.
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