Dajianshan Beach Introduction
Waisanding Island is located about 10 kilometers off the coast of Yunlin and Chiayi, covering an area of approximately 1,000 hectares. Named for its umbrella-like shape, it is the largest sandbar in Taiwan. Waisanding Island is influenced by waves, coastal currents, and the northeast monsoon, drifting an average of 60 to 70 meters southwest each year, thus earning the nickname "moving territory." It primarily formed from the sediment carried by the Zhuoshui River as it flows into the sea. The presence of Waisanding Island creates a barrier, resulting in the formation of a calm and vast body of water in the Dongshi Lagoon between it and Chiayi County, allowing for prosperous oyster farming.