Koh Chi
Koh Chi is the smallest and northernmost of the Surin islands. On its west side a gentle slope of hard corals and granite boulders reaches about 22 m, while the north end has boulders and small caverns used by soldierfish, angelfish and reef sharks. Several turtle species and pelagics such as trevally, barracuda and tuna are seen, and blacktip reef sharks are more frequent here than in the Similans. Currents can be strong.
Tiefe: 3–22 m