Oncomelania has a long history. It first appeared in the Cambrian period 570 million years ago, and now it is mainly distributed in the West Indies, Indonesia, Japan, South Africa and Central America. According to incomplete statistics, there are more than 15 existing species. Oncomelania Longgong is just one of Oncomelania, and it is the largest and most beautiful species among Oncomelania.

2. Tangguanluo

Tangguan snail shells are large and heavy, with a length and height of 30 cm, grayish white to golden yellow, metallic luster and a shape like the crown hat of the Tang Dynasty, hence the name. Because of its unique and beautiful shape, it is a treasure for furniture and play, and its market price is also high.

3. Pteris

Pteris canaliculata, also known as Pteris canaliculata, has a high and sharp tower, and the top of the snail is often defective. Mainly distributed in coral reefs in warm seas such as Indian Ocean, New Zealand, Philippine, Japanese and China, the pattern is as gorgeous as "phoenix tail", with uniform layout, colorful shell surface and rich decoration, which can be used as horns.

4. Nautilus

Nautilus * * * has 2 genera and 6 species, and its entire spiral shell is smooth as a disk and looks like a parrot's mouth, hence its name "Nautilus", which is one of the oldest primitive marine life on earth. Nautilus appeared in the Paleozoic era, and now there are only six species in the deep sea of the South Pacific, which are known as "living fossils in the ocean".

5. Baoluo

The snails are mainly distributed in intertidal zones, rocky reefs, coral reefs and sediment beds in tropical and subtropical warm seas, with a wide variety of ***307 species. Baoluo is a combination of food, appreciation and decoration, and is deeply loved by people. Among them, the most outstanding one is the black star snail, whose surface is covered with black spots, resembling jaguar markings, and its color is dazzling, which makes the appreciator fondle admiringly.