The flower nail is small, the shell surface is yellow-brown, and the dark lines on the shell surface are similar to the characters but have a concave-convex feeling. The color becomes darker and the pattern becomes larger, with spots or patterns composed of black, brown, dark brown, dense color or reddish brown.
In some places, the flower shell (flower clam) is also called clam, but strictly speaking, the flower shell (flower clam) can only be regarded as a kind of clam. Because clams are also the general name of many other edible shellfish, there are many kinds of clams, and there are eight kinds of clams that are often eaten, namely white clams, green clams, old clams, clams, clam shell clams, oil clams and oil clams. In a word, the relationship between the flower shell and the clam is that the flower shell is a clam, but the clam and the flower shell are different, they are the relationship of inclusion and inclusion.