Shark Island (Red Rock)

The third of the original Italian named sites (and retaining the name amongst most traditionalists) Red Rock or Shark Island is an elliptical island rising 10 meters above the surface just off the Southeast coast of Koh Tao, it offers one of the most varied dive sites in the area, ranging from 24 metres to the surface. Many come in their search for whale shark, leopard shark and reef shark; it is the likelihood of finding them that has given the site its now favoured name, that combined with its resemblance to a sharks dorsal fin.

However even if you have no luck in that search, there's the guarantee of a beautiful sub-aqua odyssey through the most stunning soft corals of blue alcyonaries, gorgonian sea fan, black coral and coral tables, all in hues of purple, crimson and gold. Schools of brightly coloured coral fish will swim with you, innately curious.

There is a good chance of seeing solitary great barracuda, pairs of emperor angelfish, titan and clown triggerfish, or orange-spined unicorn fish and the resident turtle. Huge boulders and rock formations lend this site a unique topography that is accessible to divers of all levels given that there are two or three different dives that can be undertaken. At the more experienced level it offers a great drift dive in a moderate current, just get the boat to pick you up at the end.

Facts at a glance:

Max. Depth Avg. Depth Avg. Visibility From Mae Haad Diver Skill
28 metres 15 metres 5 - 30 metres 4000 metres south-east Open Water +


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The great barracuda is a fine hunter.
The leopard shark is another perfectly harmless species.  Its distinctive markings are quite beautiful.