Because arkshells inhabits offshore waters are often contaminated by city water, so that seawater contains hepatitis virus excreted by patients with hepatitis, arkshells through the filtration of food activities, hepatitis viruses accumulate in the body. When people eat arkshells, in order to figure out the flavor is not fully cooked, so the hepatitis virus has not been killed and entered the body, easy to lead to hepatitis infection, so arkshells must be eaten sparingly.

Living in the Inner Bay shallow sea low tide line down to the depth of more than ten meters in the mud and sand bottom, especially in the freshwater outflow near the mouth of the river, to 4-8 meters mostly.

The young ark shells are mainly related to the water temperature and the size of the individual when they leave the attachment base and move into the submerged life. When the water temperature drops to 19℃, 80% of the juvenile shells with body length ≥4.5mm will start to detach from the attachment base, and transfer to the submerged life from mid-September to early October in the same year; while the body length of 4.5mm will not detach from the attachment base basically.

The same kind of specification of young shellfish submerged in 36% faster than the growth of the attached base. The optimal water temperature for the growth of young shellfish is 20 to 26 ℃, 20 ℃ below the growth of a gradual slowdown, to 7 ℃ when the basic growth stops, stop feeding.

Characteristics of the appearance of the cockleshell: the adult cockleshell is 4-5 centimeters long, the shell surface is swollen ovoid, the two shells are not equal, the top of the shell is protruding and involutional and biased to the front; the shell surface is radial ribs of 30-44, and the ribs show square nodules; the hinged part is straight and there are about 50 teeth; the shell surface is white, and it is covered by a brown tomentose epidermis.