1, the razor clam has been dead for more than 3 hours, so I can't eat it. Razor clam is a kind of common seafood, which is rich in protein, and it carries more bacteria and microorganisms. After the razor clam dies, the bacteria and microorganisms will multiply rapidly at a certain temperature, and its death time will exceed 3 hours. Among them, protein is decomposed and deteriorated, which is easy to cause physical discomfort after human consumption. If the razor clam has just died and it hasn't been more than 3 hours, it can still be eaten.

2. Every razor clam has a transparent nematode-like thing, which is an organ in the digestive system of razor clam, called "crystal stem", and it is edible. When SINONOVACULA constricta eats, the crystal rod acts as a stirrer to drive gastrointestinal peristalsis and promote food digestion; When the razor clam is hungry, the crystal bar will automatically dissolve to satisfy its hunger. Generally, there will be no crystal rods in the body of the razor clam that has been placed for a long time, but the crystal rods will be dissolved in turn due to the speed of its own enzyme decomposition, so even the fresh razor clam caught at the same time has some crystal rods and some do not.

3. Generally, the parasite on Sinonovacula constricta is a kind of organism called "Enterotoxigenia constricta", which is yellow and milky, about 2 cm long, completely different from the crystal bar. Parasitic razor clams are emaciated and cannot continue to reproduce. Squeezing its abdomen will cause more than one creature to climb out. If people eat cooked razor clam with parasites, it is generally ok, and people with poor gastrointestinal function may have indigestion and other reactions.