Why does Shandong have a major ocean-fishing industry?

Shandong province possesses a thriving ocean-fishing industry primarily due to its advantageous geographic position and favorable marine conditions. The province’s seaward orientation and its extensive, indented coastline feature several excellent harbours that support a robust fleet of trawlers and smaller fishing craft.123

A critical environmental factor is the convergence of cold and warm currents in the offshore waters, which creates a highly productive marine environment that supports diverse aquatic life. This region, which includes the Bohai Sea and the Yellow Sea, is well-known for its rich resources of demersal (bottom-dwelling) fish, as well as various species of shrimp, crab, and mollusks. Additionally, the province’s coastal geography includes tidal beaches that serve as essential breeding grounds for mollusks, further bolstering the industry.124