Dive-site story
Situated south of Phuket, Koh Racha Yai offers sheltered bays and gentle sloping reefs that suit both entry-level training and relaxed drift diving. The island features several discrete dive spots, ranging from shallow sandy coves like Siam Bay and Bungalow Bay to hard coral reefs and artificial structures along the eastern shoreline. Concrete cubes, motorcycle frames, sunken sculptures, and several small purposely scuttled wrecks create artificial habitat across the sandy bottom.
Submerged temple-style statues and concrete structures in Siam Bay
Multiple small wrecks and artificial cube reefs lying on the sandy seabed
Sheltered coves providing calm conditions during monsoonal shifts
Location
Use the map to plan with your operator and confirm the exact entry point on the day.
Seasonality
Accessible throughout the calendar year by shifting between the east and west bays according to monsoon winds.
Marine life
| Species | Likelihood | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Blue-spotted ribbontail rayTaeniura lymma | Common | ||||||||||||
| Giant morayGymnothorax javanicus | Common | ||||||||||||
| Yellowtail barracudaSphyraena flavicauda | Common | ||||||||||||
| Clark's anemonefishAmphiprion clarkii | Common | ||||||||||||
| Pharaoh cuttlefishSepia pharaonis | Common | ||||||||||||
| Leopard sharkStegostoma tigrinum | Seasonal |
Marine forecast
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