Comment from the photographer: Am unsure of the identification. Would someone please help?

Photo Information

Photographer
Leona Holaday
Species name
Thecacera sp.
Taken on
18 November 2011 05:30:06 am
Posted
13 years ago
Updated
13 years ago

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EXIF Information

Camera
Canon PowerShot G11
Date and Time
2011:10:18 05:30:06
Exposure Time
1/60
Exposure Bias
0/1
Focal Length
431/40 mm
Horizontal Resolution
72/1 dpi
Vertical Resolution
72/1 dpi
Aperture
f/8.0
ISO
200
Exposure Mode
Auto exposure
Metering Mode
Center Weighted Average
Flash
Flash fired, compulsory flash mode
White Balance
Manual white balance
Color Space
sRGB
Software
Aperture 3.1.3

Scientific Classification

KingdomAnimalia
PhylumMollusca
ClassGastropoda
OrderNudibranchia
SuborderDoridina
FamilyPolyceridae
SpeciesThecacera sp.