Comment from the photographer: I thought this might be Risbecia imperialis. It was about 10cm long and at 25 meters depth.

Photo Information

Photographer
Simon Richer
Taken on
20 September 2012 02:00:55 pm
Posted
12 years ago
Updated
12 years ago

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EXIF Information

Camera
Date and Time
2012:08:20 14:00:55
Exposure Time
1/450
Exposure Bias
-67/100
Focal Length
570/100 mm
Horizontal Resolution
72/1 dpi
Vertical Resolution
72/1 dpi
Aperture
f/3.8
ISO
100
Exposure Program
Normal program
Exposure Mode
Auto exposure
Metering Mode
Spot
Light Source
unknown
Flash
Flash did not fire, compulsory flash mode
White Balance
Auto white balance
Color Space
Software
Adobe Photoshop Lightroom 4.1 (Windows)

Scientific Classification

KingdomAnimalia
PhylumMollusca
ClassGastropoda
OrderNudibranchia
SuborderDoridina
FamilyChromodorididae
SpeciesHypselodoris pulchella