Not everyone spells the Thai names of the islands the same way Racha is often spelled Rajah and Raya.
Racha Yai offers some of the best local year around dive-sites but the visibility varies as to the season.
On the north end of the island are two beautiful little bays famous for their a deep clear water and colorful coral formations. Both of them have almost swimming pool features as they gradually drop to a depth of 40 feet onto a sandy seabed, providing ample opportunities for both snorkeling and scuba diving.
The best diving is off the east coast where the current allows a gentle drift dive along a sloping rocky face that is covered with an amazing array of hard corals and the nutrient rich water draws large schools of tropical fish.