The Gulf of Bohai is a semi-enclosed body of water located in northeastern China. It is bordered by the provinces of Liaoning, Hebei, and Shandong, and connects to the Yellow Sea to the east. The gulf is relatively shallow, with an average depth of about 18 meters, making it an important area for fishing and shipping activities. The gulf is home to several major cities, including Tianjin and Dalian, which are vital for trade and commerce. Additionally, the Bohai Sea is known for its rich marine biodiversity, supporting various species of fish and other marine life. Environmental concerns, such as pollution and overfishing, are significant challenges in the region.