Big pencil urchin. These are normally hidden deeply in the coral. At night tho, they come out to feed.

_MG_1706.jpg
2007:06:24 04:24:26
Focal length: 100.0 mm
1/180 sec, f/16
Mode: Manual
ISO: 400
Flash: On
File size: 7,162KB
Image size: 4368 x 2904