1, razor clam sand sacs can not eat, sand sacs are razor clams feeding is brought into the sand, is not eaten part, eating will affect the taste.

2, razor clam viscera in the material can not eat, razor clam viscera in some undigested food residue, there is mud fishy flavor, eating will affect the body.

3, razor clam shells can not be eaten, razor clam shells, although it is made up of chitin, protein, minerals, but the composition of the structure is not the same, it is difficult to digest, so it can not be eaten.