For the last day of the year, we enjoyed a series of dives in the shallow waters by Koh Krahm, just a short boat trip away. The water had its usual murky quality from the island sediments—nothing we can do about that! However, we made sure to peer under every rock and were rewarded with some sting rays and, prize of prizes, (possibly) a gold-speckled flatworm (Thysanozoon nigropapillosum)! To identify the flatworm, we spent time in Marine Flatworms of the World, an excellent resource!
We started out photographing with our wide-angle lens, but the quality of the water is just too poor. Instead, we suggest using a simple dome.
If you're interested in spotting the blue-spotted ribbontail ray (Taeniura lymma), be sure to peer under rocks in the sandy shallows. (But leave them be under there!) They're generally… quite stupid, with their heads under the rocks with tail out.