As planned the day before, we went to Coca Thila to find grey reefsharks, early in the morning. The Thila is quite deep (20m+) so we could not stay forever. A huge stingray greeted us right on descent and the current was quite strong. We saw a couple of sharks, but not as many as expected. The currents opposite as announced and so we had to make do with 4 mobula rays cruising below us at the 5/3 stop.