This is: Tobacco snails, belonging to the order Stemeye and family Tobacco snails, are a common terrestrial snail that feed on moss, plant leaves and humus. They often appear in groups in wet areas after rain. on walls and tree trunks. The tobacco pipe snail is often considered to be a snail that infects schistosomiasis. In fact, it is easy to distinguish from the appearance. The shell of the pipe snail is right-handed, which is the direction of rotation of most snails, while the tobacco pipe snail is a left-handed snail. There are different types of left-handed snails in nature. There are so many that you can recognize them at a glance. There are many species of Tobacco Snails, and it is difficult to distinguish them by looking at the back. You have to look at the wrinkle lines under a magnifying glass to accurately identify the species.