조가비(COCKLE SHELLS)
The cockle shells belongs to the bivalve group of mollusks, who's shell is formed in two pieces. A mollusk is a soft bodied, legless invertebrate animal that normally forms a calcius shell. Many Cockle shell varieties are part of the human diet. Most Cockles burrow in sand or mud in shallow sea water. They have been found world wide, sometimes in very large numbers covering a small area. CARDIU..