Submerged Rock

Submerged Rock never breaks the surface - the swell marks it with a boil on big days - and its underwater profile is a gift: a pinnacle drilled clean through by a swim-through at around 15-18 m, lined with encrusting color and packed with fish waiting out the current. Whitetips stack inside the tunnel and under every overhang, eagle rays and marbled rays orbit the base, and hammerheads make wider circuits out in the blue. Because the interesting depth band is shallower than at the marquee seamounts, it often serves as a second or third dive that ends up out-delivering the first.

您此行的高光时刻: The swim-through, dense whitetips, rays orbiting a tower of rock

地形地貌: Pinnacle rising to just below the surface, pierced by a swim-through

水流: More forgiving than the outer seamounts, though swell finds it easily.

危险因素: Surge in and around the swim-through; keep the tunnel passage brief and orderly.

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）。