Thomas Reef

Smallest of the four Tiran reefs and, for many guides, the prettiest, Thomas concentrates its color into a tight lap: soft-coral terraces, fields of fire coral, and gorgonians leaning into the flow. Below 35 meters a canyon slices along the eastern side, spanned by natural arches and reserved in practice for technical divers - the recreational drift stays higher, riding the walls among snapper, fusiliers, and patrolling whitetips. Because the reef is short, current dictates everything; on a strong exchange the site becomes a fast scenic transit, on slack it rewards slow inspection of the overhangs. Turtles and eagle rays cross the deep edge, and the top reef glows in afternoon light.

您此行的高光时刻: Soft-coral terraces at their densest; the deep canyon and arches for qualified teams; fast, exhilarating drifts.

地形地貌: Steep walls, soft-coral terraces, and a deep canyon crossed by rock arches

水流: Current wraps both ends of the small reef and can turn washing-machine quick; listen to the briefing.

入水方式: No moorings on the exposed faces - dives run as drifts timed to the tide.

危险因素: Strong current and eddies; the canyon lies beyond recreational limits; separation risk on busy days.

许可证与规定: Tiran marine-park fee applies.

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）。