INDIAN OCEAN
Richelieu Rock
- Thailand
- Experienced
- October - May
Plan your dive
- Experience level
- Experienced
- Depth guide
- Pinnacle to about 35 m
- When to go
- October - May
- Site type
- Pinnacle & Macro
Featured wildlife
- Harlequin shrimp
- Giant trevally
- Whale shark
About this dive site
An Andaman pinnacle of critters with occasional whale-shark luck.
Richelieu Rock rises from open sea as a horseshoe of soft corals, anemones and swarming fish. Macro life hides in every crevice, harlequin shrimp, ghost pipefish and nudibranchs reward slow passes. Whale sharks sometimes visit on plankton-rich days, but the everyday magic is the dense, colourful reef itself.
Go slow, stay off the bottom, and follow a local macro guide - silt and fin kicks ruin shots and habitats. Calendar peak is October - May, but skippers still move sites when wind, swell or current change. Book with a crew that knows Richelieu Rock day to day, not just the map pin.