The innermost gulf of the Yellow Sea in northern China is the Bohai Sea.
The Bohai Sea, also known as Bohai Gulf, is a nearly enclosed marginal sea on China’s northern coast. It is bordered by the Liaodong Peninsula, the Shandong Peninsula, and mainland China, with a narrow connection to the wider Yellow Sea through the Bohai Strait. Because it is the Yellow Sea’s innermost major body of water, it is sometimes described geographically as a gulf even though its standard English name is “Bohai Sea.”
Several major rivers flow into it, including the Yellow River, Hai River, Luan River, and Liao River. Their sediments contribute to the sea’s shallow, productive coastal environment. The Bohai region is also economically significant, containing major ports, dense industrial development, fisheries, and offshore petroleum resources.
It is easy to confuse the Bohai Sea with the Yellow Sea itself, but the Bohai is a distinct northern subdivision. The Gulf of Tonkin lies much farther south, between Vietnam and China, while the Gulf of Carpentaria is in northern Australia.