While skindiving, I noticed a nice red pencil urchin by a head of coral. Swimming closer, I discovered that there was also a Puhi Paka (Yellowmargin Moray, Gymnothorax flavimarginatus) "guarding" that particular area. Given that morays tend to have quite a lot of needle-sharp teeth, I decided to not get too close. Canon PowerShot S20, Ewa-Marine D-MM enclosure, 3-4 meters depth. I took several shots and chose this one. At first, it looks like it's just a photo of some coral and underwater scenery... surprise, it's not!