This good dive site found in the Similan Islands National Park is a great all around dive that gets its name from the formation of three pinnacles that look like shark fins. They can easily be seen from the surface and are a good marker for the dive site.

The dive site is made up of mostly sea fans, soft corals, and hard corals. There is a formation of granite boulders as well, which is common for the area and creates a dive site that can feel like two separate exploration areas. The maximum depth goes to about 40 meters and the current is normally moderate to strong. There is a swim through between two boulders that is very close to the hard coral and so divers should be careful when undertaking this manoeuvre.

Divers should look out for white tip reef sharks, black tip reef sharks, tuna, barracuda, and trevally. Like other sites in the area, it is common to spot Napoleon wrasse, triggerfish, batfish, angelfish, bannerfish, humphead parrotfish, and leopard sharks. Macro divers should look out for the many nudibranchs, blue ribbon eels, and leaf fish. The various topography of the boulders alongside the variety of corals makes this an excellent site for photography.