Generally speaking, they live near rocks and at the bottom of sediments in offshore areas. Relevant data show that the snail itself is non-toxic, and its fatal toxicity is obtained in the growing environment. In recent years, due to the massive discharge of mariculture, industrial wastes and domestic sewage, seawater is eutrophic, and red tides frequently occur in the South China Sea, the East China Sea, the Bohai Sea and the Yellow Sea in different seasons. Some algae that breed in red tide will produce toxins, and snails are poisoned by ingesting toxic algae, accumulating microcystins, or other toxic substances such as tetrodotoxin. Paralytic shellfish poisoning is the main toxin caused by snails, which is similar to tetrodotoxin. Poisoning patients mainly have symptoms of nerve paralysis, and the mortality rate is high. Savory.