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Jansom Bay

Jansom Bay is one of our quiet favourites on Koh Tao, perfect if you’re looking for a relaxed afternoon dive away from the usual crowds. It’s got a lovely, sheltered feel to it, often much calmer than some of the more exposed sites. We’ve had some cracking dives here just drifting along the sandy bottom, spotting an impressive number of bluefish and golden trevally cruising past. The real joy of Jansom Bay is how much you can just slow down and observe. We’ve spent ages watching iridescent blue trim and green-blotched parrotfish meticulously grazing the corals, their jaws clicking softly in the current. Look closely amongst the rocks and you’ll often find miry’s demoiselles zipping about and sometimes a grumpy-looking rock cod peeking out. It’s not a site for big pelagics, but for a tranquil dive where you can really soak in the smaller details and the gentle sway of the water, it’s a winner. We usually head here mid-afternoon, when the light hits the bay just right, illuminating the sand and attracting the pink anemonefish in their homes. It suits divers who prefer a leisurely pace and enjoy patient macro spotting over zooming around deeper reefs.