Dalu Island, located in the Yellow Sea, is located at the mouth of the Yalu River, known as the "Pearl of the Yellow Sea".

Located at the northern end of the motherland's 10,000-mile sea frontier, it is the largest island at the northern end of China's coastline, with an area of 6.6 square kilometers. The resident population on the island is about 3,000. It is under the jurisdiction of Gushan Town, Donggang City, Dandong Province, Liaoning Province.

There is a traditional fishing industry on the island, as well as a burgeoning tourism industry.