Beach; Tidal Flat; Shoal
Originally these terms refer to the marine flat and they are the transitional zones between the ocean and the land. They are areas of deposition between the highest and lowest tide levels, where sediments such as gravels, silts or mud are deposited. Tidal flats are sometimes submerged by tides, and they can be exposed to the air. China’s tidal flats are mainly located on the coastal areas north of Liaoning and south of Guangdong, Guangxi, and Hainan, and they cover a total area of approximately 2.704 million hectares. China’s land use classification system defines beaches as sea beaches, river beaches and lake beaches.