What is the largest coral reef system in Thai waters, stretching along the Andaman coast of Phang Nga province?
ASurin Islands reefs
BSimilan Islands reefs✓
CPhi Phi reefs
DKoh Tao reefs
The Similan Islands National Park protects Thailand's most extensive and biodiverse coral reef system, with over 500 species of hard and soft corals and abundant pelagic marine life.