2. Sweet snails are also called rattlesnakes and golden snails. The shell is nearly rhombic, the shell is hard, the height is 134 mm, the width is 77 mm, the spiral layer is about 7 layers, and the suture line is obvious. It belongs to Gastropoda mollusk and is endemic to China. Produced in the Yellow Sea and Bohai Sea, mainly distributed in Guangdong, Fujian, Liaoning, Shandong and other regions. It's just called Hailingjiao in Yantai area.

3. Sweet snails have high nutritional value, including carbohydrates, calcium, phosphorus, iron, vitamins and other nutrients, among which calcium content is particularly high, with the characteristics of high protein and low fat.