2, elephant trunk mussels, also known as emperor mussels, goddess clams, is the Far East, including the Chinese and Japanese people revered consumption of high-grade seafood. It is a large shellfish in the genus Clam. Elephant drawn clam, also known as sea shoots, belongs to the mollusc family, is a kind of marine shellfish, individual large and small, habitat varies according to the type of origin in the United States and Canada's North Pacific coast. Because of its large and succulent red tube, it is known as "elephant mussels".