Boulder bridge under the seafood wholesale market. According to check Baidu map, Chaonan District oyster wholesale market in Shantou City, Guangdong Province, Jinping District, No. 274, Anping Road, boulder bridge under the seafood wholesale market. Boulder Bridge Under Seafood Market is one of the long-established seafood wholesale markets in Shantou, which mainly deals with all kinds of seafood products, including fish, shrimp, shellfish and crab. The market is large in scale, with an operating area of about 6,000 square meters and nearly 100 different traders with ample supply.