Slate Pencil Urchin, Molokini
The naturalist on our Pacific Whale Foundation snorkel trip told us about Pacific slate pencil urchins, so we were pleased to spot them at Molokini. They are so named because, after they die, their spines can be used to write on a chalkboard.

Taken on November 30, 2011 at 10:11AM with a Canon - Canon Powershot A570 Is
f/3.5 at 1/60sec (iso 80), focal length: 5.8mm

Image Copyright © 2011 Jeremiah Blatz  

This work is licensed under a Creative Commons License.