The Yellow Sea is the northern part of the East China Sea, located between mainland China and the Korean Peninsula. It derives its name from the sand particles and silt carried by the Yellow River (Huang He) and the Hai River, which turn the water a distinct yellowish-brown. This shallow sea is one of the most productive marine environments in the world, serving as a critical nursery for fish and a vital stopover for millions of migratory birds along the East Asian-Australasian Flyway. However, it is also one of the most stressed marine areas due to intensive reclamation projects, overfishing, and massive seasonal algae blooms (green tides). The sea is a strategic maritime corridor for global trade, particularly for the ports of Shanghai, Tianjin, and Incheon. It is also known for its 'Sea Parting' phenomenon near Jindo Island, where extremely low tides reveal a natural land bridge between islands.