The coastline starts from T-shaped Bay in the north (latitude 36 36 ′17 ″ and longitude120 46 ′ 03 ″) and ends in Zhanggezhuang Village, Hongshiya Town, Jiaonan City in the south.
The coastline is 730.64 kilometers long, and the coast is basically divided into three basic types: bedrock headland, stable coast and silting growth coast. Among them, 342 km and 55 km are soft, accounting for 9 1 and 3%; Hard 32,80 kilometers, accounting for 8,7%. The coastal beach area is 375,35 square kilometers.
There are 69 islands with a total area of 2 1 and 1 km2 and a total coastline of132km. Most of these islands are less than 20 kilometers away from the mainland, and the farthest Qianliyan Island is about 64 kilometers away from the land.