Admiralty Anchor

The site takes its name from an old admiralty-pattern anchor wedged fast into the coral at recreational depth, a relic of some long-forgotten visit that the reef has spent decades absorbing. Around it, Osprey's western rim is carved into tunnels and chimneys that open onto the outer wall, so a single dive strings together cathedral light in the swim-throughs, a portrait stop at the anchor, and a drift along the drop with the blue stretching below. In forty-meter visibility the whole circuit feels weightless, and whitetips dozing in the cuts complete the postcard.

您此行的高光时刻: Historic anchor grown into the reef, light-filled swim-throughs, huge visibility on the wall

地形地貌: Coral rim on Osprey Reef's western side cut with tunnels and swim-throughs, wall beyond

危险因素: Overhead sections in the tunnels; check buoyancy and torch before committing.

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）。