Picture taken at 28 meters deep.
This shark, in the early hours of the day, rising from the depths to the shoals, which forms the top of the seamount Monad Shoal, seeking the services of cleaning parasites, which perform two wrasses, which are abundant in this place Labroides dimidiatus and Thalassoma lunare.
http://www.threshersharkproject.org/TSRCP/Research.html
(Simon P. Oliver)