South of Koh Tao, Shark Island gets its name from its shape — the rocky outcrop above the water looks like a shark fin.

Below the surface, the reef bursts with bright corals and sponges. You might see reef sharks in the deeper sections and hawksbill turtles grazing along the reef, while schools of butterflyfish, parrotfish, fusiliers, and longfaced emperor fish sweep around the rocks. Look closer into the cracks for moray eels and stingrays resting in the sand.

Shark Island is one our favourite Koh Tao dive sites and we dive it at least twice a week.