Koh Bon and Koh Tachai are actually located in Mu Koh Similan Marine National Park, but in the past these two sites were so far away that very few divers could reach them. However, access has been much improved and today hundreds of divers per day may head out to Kon Bon in order to see the Manta, the largest ray in the world.

Most divers, if visiting between December and April, are not disappointed. The chance of seeing a Manta Ray is very high and sometimes you may even see four of them on a single dive. Just to see a single Manta is an unforgettable experience.

When you compare the expense, time and convenience of other sites, very few places in the world are comparable to Kon Bon.

Koh Tachai is an island surrounded by a vast expanse of sea. Underwater rocks are one of the most diverse habitats for soft corals and sea fans in Thailand. Whale Sharks and Manta Rays often visit. The beauty of the 20-metre-deep underwater rocks is a sight not to be missed.