Laizhou Bay is the southern arm of the Bohai Sea

Bohai Sea

Bohai Sea , also known as Bohai Gulf, Bohai, or Bo Hai, is the innermost gulf of the Yellow Sea on the coast of Northeastern and North China. It is approximately 78,000 km2 Bohai Sea , also known as Bohai Gulf, Bohai, or Bo Hai, is the innermost gulf of the Yellow Sea on the coast of...

 (also known as the Bohai Gulf, or just Bo Hai), which is a large relatively shallow extension of Korea Bay

Korea Bay

The Korea Bay is a northern extension of the Yellow Sea, between Liaoning Province of China and North P'yŏngan Province of North Korea.It is separated from the Bohai Sea by the Liaodong Peninsula, with Dalian at its southernmost point...

 (Northern Yellow Sea

Yellow Sea

The Yellow Sea is the name given to the northern part of the East China Sea, which is a marginal sea of the Pacific Ocean. It is located between mainland China and the Korean Peninsula. Its name comes from the sand particles from Gobi Desert sand storms that turn the surface of the water golden...

) behind the Liaodong Peninsula to the north, and the Shandong Peninsula to the south. Both peninsulas are roughly triangular in shape and point towards the Bohai Strait, the mouth opening out to the Yellow Sea via the southern region of Korea Bay.