Coral Island is the most popular of the group of small islands just south of Phuket. As its name suggests, it is well known for its shallow coral reefs and excellent snorkeling.
The island's Thai name is Koh Hay (sometimes written Koh He, Koh Hae, or other variations). This does not actually translate to Coral Island. It means crowded island and the name is not totally inaccurate. The island does receive plenty of day-trip visitors throughout the high season.