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Shark Fin Reef

Shark Fin Reef is one of those sites we always come back to in the Similans. It’s a long stretch of submerged granite boulders, running north to south, creating channels and swim-throughs you could spend an entire dive exploring. We usually drop in on the west side and let the current carry us gently along, weaving between the rocks. You’ll spot plenty of Red-flushed Cod peeking out from under ledges, and the Staghorn coral patches are thick with Red Sea Half-and-half Chromis, a shimmering cloud of them. Look closely and you might spot a Crown of Thorns starfish lumbering along. The schools of Blue-lined Surgeonfish here are particularly impressive, often so dense they cast a moving shadow over the reef. We love pushing deeper into the gaps between the boulders, where you can feel the slight chill of cooler water and the sound of your own breathing amplifies. Keep an eye out for larger Honeycomb Groupers in the deeper sections, they're often just hanging out, unbothered. This site is brilliant for divers who enjoy exploring rocky topography and don't mind a gentle drift, with plenty of small reef fish action to keep things interesting.