Razor clam (scientific name: Sinonovaculaconstricta (Lamarck)), a mollusc in the family Bamboo Razor Clam.

Razor clam shells are rectangular and rounded at both ends, about 4 to 8.5 centimeters long, the top of the shell near the front, the growth line is significant, two pieces of shells are equal, the shell surface is yellowish-green, often with wear and tear broken and white.

It inhabits the soft sediment near estuaries and shallow inland bays with a small amount of freshwater injection, and is widely distributed along the coasts of north and south China, and also in Japan.