海 (hǎi) is the Chinese word for "sea" or "ocean." It refers to large bodies of saltwater that cover significant portions of the Earth's surface. The sea plays a crucial role in regulating the planet's climate and is home to a diverse range of marine life, including fish, mammals, and plants. In Chinese culture, the sea is often associated with vastness and mystery. It has inspired countless works of art, literature, and folklore. The South China Sea and East China Sea are two significant bodies of water in China, influencing trade, culture, and the economy in the region.