2, clams are a kind of mollusks, is a large classification, including a flower armor, clams, white clams, Xishi tongue and many other varieties, there is "the world's first fresh" reputation.

3, flower armor that is the clam, because the Cantonese clam and flower armor homophonic, the clam was written flower armor. Clams in Hainan region called mango snail, is a mollusk, about 3 cm long, shell ovoid, light brown, purple edge. Living in the shallow seabed. The shell is longer and thinner, is long ovoid.