What is the story of "snail girl"? Say it briefly.

The story of snail girl is: Once upon a time, there was a fisherman who worked hard in the fields every day. One day, when he came back from the field, he found a steaming table of food. The fishermen began to eat without thinking about anything.

After several days, he had to find out. It turned out that the snail girl helped him cook, and then they were happy together.

Extended data

The main feeding organ of snails is the tooth tongue, which is used to scrape the bottom and incidental food. Snails are omnivores. In the natural environment, it mainly eats the tender stems and leaves of aquatic plants, algae, bacteria and organic debris, and also filters plankton, and likes night activities and eating.

When the water temperature is around 15℃, snails start to move and eat. When the optimum temperature is 20~28℃, when the temperature is above 30℃, snails will shrink into their shells, gather in the shade or dive into the soil to escape the heat. When the water temperature exceeds 40℃, snails will die.

It has strong adaptability to drought and cold. When the water temperature is below 8℃, snails will dive into mud holes to hibernate. Next spring, when the water temperature rises to about 15℃, snails will enter the cave again to eat. River snails are very sensitive to dissolved oxygen in water. When the dissolved oxygen in water drops to 3.5 mg/L, they lose their appetite. 1.53.5mg/L, the death began.