Crystal Rock

Crystal Rock earns its name on calm mid-year mornings when the water over its shoulders turns to glass. The pinnacle's tip shows at low tide; underneath, soft corals in orange and yellow crowd the current-facing faces, and a saddle runs across to a deeper satellite mound where sharks and dogtooth tuna hold station. Sweetlips and snapper bunch under the overhangs, turtles chew through the shallows, and eagle rays pass occasionally on the tide. It offers a touch more coral color than its neighbor Castle Rock and the same predatory traffic, so liveaboards commonly dive both in a morning. The window between too little current and too much is where this site does its best work.

その瞬間のために: Vividly clear water in season; soft-coral faces; tuna and sharks on the deep saddle.

地形: Rock pinnacle breaking the surface at low water, with a satellite mound and coral saddles below.

流れ（カレント）: Same tidal engine as Castle Rock next door; slack-window timing changes the dive completely.

危険生物・リスク: Current over exposed rock, surge in the shallows near the tip, and the usual northern-Komodo demand for tide-table discipline.

ナイトロックス: ここでは効果的です——このエリアのプロファイルは、ナイトロックスが無減圧潜水時間を有意に延ばせる水深帯にあります（適切なトレーニングを受けていることが前提です）。