It is most common in tropical islands, but it is also found in cold regions. Arboreal species are brightly colored, while terrestrial species are usually monochromatic. The agate snail in Africa is the largest, more than 20 centimeters. Several species of the genus Megasnail in Europe are often used as delicacies, especially in France. Snail is one of the most common mollusks on land, which has high edible and medicinal value.
Snails have the most teeth in the world. Although its mouth is only the size of a needle tip, it has about 26,000 teeth. There is a small hole in the middle of the snail's small antenna, which is its mouth. There is a serrated tongue inside, which scientists call "toothed tongue".
Snail (3) Snail is not a biological classification name. Generally speaking, what does it mean? ? ? ? All kinds of animals in the family, also broadly including some animals in other families of Gastropoda (including slugs, etc. ) There is no distinction between aquatic snails and terrestrial snails in general western languages. In Chinese, snails only refer to terrestrial species, although they also include many animals of different families and genera, but they are similar in shape. Snails have a relatively fragile low conical shell. Different kinds of shells are left-handed and right-handed. The head has two pairs of antennae. The last pair of longer antennae has eyes at the top and a flat and broad abdomen on the ventral surface. They move slowly, and the soles of their feet secrete mucus to reduce friction and help them walk. Mucus can also prevent the invasion of general insects such as ants.