Sail Rock

Sail Rock stands alone in the middle of the gulf, a granite sail above water and a fish magnet below it, widely rated the best dive in the Gulf of Thailand. Its party trick is the Chimney, a vertical shaft through the rock that divers enter near 18 m and exit around 6, rising through a tube of stone with fish flickering past the openings. Outside, the monolith disappears under snapper, fusiliers, and big-eye trevally so dense they behave like weather, with queenfish and king mackerel raiding the edges and whale sharks calling unannounced. Batfish follow divers around like hired guides.

您此行的高光时刻: The Chimney swim-through, bait-ball density on a lone monolith, regular whale-shark cameos

地形地貌: Granite monolith rising from around 30-34 m to above the surface

入水方式: Roughly midway toward Koh Phangan and dived by boats from Koh Tao, Phangan, and Samui; expect company.

危险因素: An overhead shaft with two-way traffic, mid-sea exposure, and busy surface conditions.

保育: Heavy multi-island boat traffic; moorings, not anchors, and patience at the Chimney entrances.

高氧（Nitrox）: 在此值得使用——各潜点深度落在富氧空气（nitrox）能有效延长免减压时间的区间（前提是持有相应认证）。