The razor clam uses gastric juice to digest food.

The constricted razor clam is a mollusk whose digestive system includes mouthparts, esophagus, stomach and intestines. When a razor clam ingests food, it passes through the mouthparts into the esophagus and then into the stomach. In the stomach, razor clams secrete gastric juice to digest food. Gastric juice is mainly composed of hydrochloric acid and digestive enzymes. Hydrochloric acid can help reduce the pH value of food and stimulate the activity of digestive enzymes, thereby promoting food digestion.