Quote: (Originally Posted by
jmhardingjr)

That said, the dark edges (because the image is not crisp and clear) may point also at a dusky shark.
If it was a dusky, Rogeringebo should be stoked. It would represent a new species record for Thailand.
If that is a remora on it's left pectoral, I will admit a bull sounds like a goo possibility. I have never seen a gray reef with a remora.