Siam Bay is a dive site located in a large bay on the western side of Ko Racha Yai Island. The shallow waters are sandy with coral and rocks scattered throughout. Near the center of the bay, at a depth of 25m to 20m, there are elephants, Thai palatial houses, and ethnic objects that are popular among divers.

Racha Yai Island, about 20 km South of Phuket, is a year-round dive site, but unlike other dive sites the best conditions are during the rainy season from May to October, when the Eastern dive sites have the clearest water of any of the surrounding islands. Sites on the Western side are most often dived Nov-Apr.

Bay 1 is located on the east side of Racha Yai Island. There are three wrecks to be explored at this dive site. Depths are between 5-25 meters and the white sandy beach is calm.

Bay 3 is the third dive site on the eastern side of Ratcha Yai Island. The central part of the bay is a calm white sandy area, dotted with branch coral beds and roots. From the northern end of the bay, you may drift dive along the island heading towards Bay 2. The reef is between 18 and 30 meters deep.

This dive site is located in the second bay on the east side of Ratcha Yai Island. It is a calm environment with white sand dotted with reef patches at a depth of 5m to 25m. There are a series of concrete artificial fish reefs facing offshore, where many fish can be seen roosting.

Homerun Reef is just north of Bay 1. A good alternative to the wrecks and concrete cubes around the main part of the bay. There is a small speedboat wreck at around 23m, just off the main reef. This is a good site for drift diving. It’s mostly large rocks, rubble and hard corals. Diving depth is 10-25 meters.

Staghorn Reef stretches between Bay 2 and Bay 3 on Ratchayi Island. At a depth of 5 to 20 meters, you can see clusters of branch corals here and there. The current is often strong, so you can dive in the style of drift diving. You can see various creatures and fishes in the branch coral areas, rocky areas, and walls as if flying through the air.

Lucy’s Reef is a reef from Bay 3 to Bay 4 on Ratchayi Island, heading south. This is a great opportunity for you to dive in the deep water. As you swim toward Bay 4, you can see coral beds and other coral formations in the rocky area around the south end of Bay 3. If the current is strong, you may be able to reach from Bay 3 to Bay 4 in no time.

Racha Noi North Point dive site offers a mesmerizing underwater experience with pristine coral gardens, abundant marine life, and thrilling drift dives along stunning granite boulders, attracting divers with the chance to encounter reef sharks, colorful tropical fish, and occasional manta rays.

North side of racha noi Island. Suitable for beginners to advanced divers. Coral bed on the outside and metal cubes in the bay at 20m. Shallow water in the bay.