Between October and end of April the weather is best to go here, it will take around 3,5 hours by big boat though. Shortest distance from Koh Lanta in the south of Thailand. Need to be an Advanced diver, currents are mostly strong, deep dive sites, but top 10 in the world!
Beautiful purple soft corals. The top of Hin Muang starts around 12 meter (you need to descend in the area of the buoyline, else you are lost forever), massive morray eels, but also some hawk fish and ghost pipe fish. Most people come here for the manta's or whale sharks. But otherwise always there are: big schools of barrakuda and bog schools of jacks, travelly and batfish.