I took this photo of a Pencil Slate Urchin (Goniocidaris tubaria) on a night dive at Bicheno in Tassie in August. It shows the various stages of spine growth and colouration.
Photocomp October '06 - Open
The Nano Spotter is perfect for diver identification during night dives, cave dives, wreck dives and allows for easy identification in any group situation.