Zhongluo family, also known as horseshoe snail family, has shells that are mostly conical or snail shaped, and some are ear shaped. The shell surface is often carved with particles, nodules, or spines. The bottom of the shell is flat and has many concentric ribs. The shell is square circular or horseshoe shaped, with a large and deep navel or no navel. The pearl layer inside the shell is thick, with papules and keratin, and is round and multi-faceted. There are many types, all of which are seafood. They mostly inhabit shallow rocky and sandy seabeds in the intertidal zone. The high capped bell snail, a member of the bell snail family, has granular or mesh shaped carvings on its shell surface. The shell edge does not protrude sharply, and there are grooves growing along the snail axis inside the shell mouth. The shell shape is conical. The inner surface of the shell has a strong pearl luster. The mouth cap is a multi-faceted keratin.