Here is a blurb from the every helpful – Similan Islands – a resource for all information on the Similan Islands. This is the Scuba Diving section
“Listed as one of the Ten best Dive sites on earth, the Similan Islands are the best diving Thailand has to offer. With Huge rocky drop-offs on the Western side, long coral reefs on the East side, and the transition zones in between. More than the just a simple reef – the Similan Islands also have the Greatest marine diversity in the country.
Nearby are the Surin Islands (and Richelieu Rock), Khao Lak, just North are the Burma Banks. South of the Similan Islands are the SCUBA diving centers of Phuket, Phi Phi and Hin Daeng and Hin Muang. Right in the middle are the Similan Islands. Please check here for our list of Similan Dive Centers.”
If you need help or advice for the Similan Islands – this is the place to go!