Marla’s Mystery is a 34-meter barge wreck purposely sunk in 2000 off Racha Yai’s east coast, typically at 30-34m depth. It’s an advanced dive due to its depth and sometimes elusive location. The open hull attracts moray eels, snappers, and tuna. It’s a fantastic artificial reef for marine life.

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.

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.

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.

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.

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.

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 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.

Bungalow Bay is a calm dive site and very good for beginners, try scuba, and open water students. Depth ranges from 5-20 meters. There is no current or waves. An artificial reef is built here as well.

Waterfall Wall at Racha Yai is a steep wall dive plunging to 25m. It’s known for healthy hard corals and diverse marine life like barracudas, tuna, and even leopard sharks on the sandy bottom. A great spot for all experience levels, often with clear visibility.