We came back to Coca Thila to look again for Reef Sharks and were not disappointed. The currents where rather week. The Thila was packed with 2 large groups of 20-30 sharks at least per group, both circling a different spot. On the lower group, sharks repeatedly went into a vertical float to be cleaned. Several animals could be seen with fishing hooks in their mouth corners. A massive 2m long Dogtooth Tuna was also patrolling the reef.