Nudibranchs - Sunshine Coast etc. / b5030w
All photos copyright ©2003-2017 David Mullins and Gary Cobb
06/03/09
Gary Cobb 0416 048 100
gary@nudibranch.com.au
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Thuridilla gracilis (Risbec, 1928)
Location: Flinders Reef, Moreton Island, Queensland, Australia
Size: 12 mm
Depth: 10 m
Temperature: 25 C
ORDER: SACOGLOSSA
FAMILY: Plakobranchidae
white
This is the "bayeri" colour form of Thuridilla gracilis by virtue of it's blue spots.
Photographs by David Mullins, Gary Cobb - Copyright 2003-2017





















On a dive trip to Flinders Reef off Moreton Island last week we found this specimen of Thuridilla gracilis in a life and death struggle with a specimen of Gymnodoris okinawae.

The G.okinawae had a mouthful of parapodium which can be seen through it's transparent buccal wall.
The Thuridilla dragged the Gymnodorid around and around at top speed for approximately half an hour before finally managing to shake it off losing a piece of the parapodium in the process.