Similan Islands
Koh Bon Island is located 20km/12mi north of Island 9 in the Similan Islands and is famous as a ‘zoo’ for manta rays. It is a popular dive site, known for a diverse marine life. The dive site has multiple areas, with several zones of interest to divers: the ridge that goes down to more than 45m/148ft deep, the two pinnacles, and a small cove. The main area out of these is the ridge, the eastern side of which is the entrance to the site. The western side is one of the reasons divers come here--it is covered with an elegant garden of variously shaped and hued corals and sea fans, with an abundance of fish swimming through their branches. Due to the considerable depth and the currents of notable strength that can sometimes occur, for safety reasons this site is only recommended for advanced divers.
When To Go Diving
The best time to dive at this site between November and March when there no rains. The average air temperature: 25C/77F to 33C/91F. The water temperature: 27C/81F to 30C/85F.
What to see
Reef with different corals, anemones and sea sponges. The marine life of this site includes whalesharks, manta rays, sharks, octupus, cuttlefish.