17/18 Moo 1, Koh Tao Suratthani, 84360 Thailand         Info @ Big Blue Diving        +66 (0) 77 456 050

Dive Sites

nanyuanpinKoh Nang Yuan lies northeast off the coast of Koh Tao. Nang Yuan Pinnacle, is a small granite pinnacle that rises out of the water from depths of about 20-24m. This dive site is suitable for all levels though during full moon, currents may be experienced. Whip coral, soft coral and sea fans are common and blue spotted stingrays are abundant and a huge number of groupers can be seen hiding in nooks and crevices. Turtles are sometimes seen foraging among the coral or resting on top of the pinnacle.

TwinsDo you remember when your instructor told you to look for the small things? Twins is the ideal place to take that advice. Two groups of rocks at depths from 10m to 18m. Your divemaster or instructor may show you the haunts of grouper, panda clownfish and stingrays, but if you take your time and look closely you might also see anemone shrimp, morays, flatworms and pipefish, as well as cleaner wrasse at their never-ending work.

Check the crevices for baby angelfish, keep an eye on the water above for squid and crocodile longtom and look for the dancing fins of the juvenile sweet lips.

WhiterockSay hello to Trevor! White Rock, consisting of two groups of rock separated by a narrow channel of sand (depths from 9m to 24m), is home to Koh Tao's single most notorious fish: Trevor the Trigger. A Titan triggerfish that has been the boss of the site for years, Trevor occasionally takes exception to divers disturbing his rest. But no need to spend the dive looking over your shoulder, let Big Blue's instructors and divemasters keep an eye out while you enjoy the sea snake, turtle, moray, blue spotted ray, butterfly fish or angelfish.

Look closely in the stag horn coral for porcupine fish and hermit crabs, and see if you can spot a well-camouflaged scorpion fish or two.

HinwongOn the east side of Koh Tao lies Hin Wong, a large and very varied site ranging from depths of 10m to 32m. Although visibility here is unpredictable, Hin Wong is covered in lacy sea fans and curly wire coral, as well as filefish, snapper, coral grouper and other reef fish. The resident turtle is only shy if you get too close. Observe her from a distance and she'll eat placidly away.
For the macro-minded, Hin Wong also has some beautiful invertebrates. Look especially for brightly colored nudibranchs.



GreenrockFascinating rock formations create small caves and swim throughs at Green Rock, which ranges in depth from 4m to 28m. Brightly colored nudibranchs are omnipresent, as are morays, harlequin sweet lips and blue ringed angelfish. White tip reef sharks can be seen from time to time, and at the deeper end of the site large grouper and schools of yellowtail, fusilier and silverfish can be seen. Look out for "the minefield", where scores of yellow margin and Titan triggerfish have made their nests in sandy pits.