Shark Fin Reef

Shark Fin Reef runs like a half-submerged spine, its exposed crest suggesting the fin that named it, with two long faces of tilted granite slab sliding into sand past 30 m. The eastern side stacks hard-coral gardens and sweeping slab scenery; the west goes steeper and moodier. Blue-spotted ribbontail rays shuffle under ledges, garden eels stipple the deep sand, titan triggerfish excavate with their usual self-importance, and this southern corner remains one of the archipelago's better bets for a zebra shark flat out on the bottom. An unflashy, spacious dive that shows the Similans' scale without demanding anything exotic in return.

바로 그 순간: Kilometer-scale granite spine, rays and garden eels on the sand, southern-sector calm

지형: Tilted granite slabs and coral gardens dropping to sand

조류: Flow runs the length of the ridge and the dive becomes a one-way drift along whichever face is in the lee.

진입: A long granite ridge southeast of island 3, its crest breaking the surface; often the first dive of northbound itineraries.

위험 요소: Length of the ridge can string groups out in current; agree on the drift plan before rolling.

보존: Park rules apply; give nesting titan triggerfish their cone of territory in the warm months.

나이트록스: 여기서는 가치 있습니다 — 수치 범위상 나이트록스를 사용하면 무감압 시간을 의미 있게 연장할 수 있습니다(단, 관련 교육 이수 필요).