China Aquatic Products Channel reported that in order to prey on rock attachment algae for a living, only on the rocky coast terrain inhabited by the sea steel helmet known as the wild snail, yesterday in the west coast of Taiwan rarely appeared, its taste is similar to the nine holes of the price is good, attracting gourmets to hunt diligently; the water test institute personnel in recent years to study the water conservancy units on the coast to place a large number of wave-destroying blocks, to create a snail living environment, the west coast only found the snail, whether it has an impact on the native ecology, to be studied in depth. According to the kaohsiung people who are busy scraping and catching snails among the wave-destroying blocks, they do not know the correct name of this single shell called "sea steel helmet", only know that there are people selling in Hualien, Penghu and other places, because of the size and price, each kilogram is about 200 to 500 yuan (NT$) ranges, the flavor is also good, will be harvested. After the comparison of the water test institute personnel, it was found that the shellfish found in the Taixi area should be a wild snail, the shell is oval like an egg, the shell is blue dark green or dark brown, the shell will grow with growth, and the appearance is similar to the nine holes. The water test institute pointed out that the snail mainly feeds on the algae attached to the rock shore stone, so most of it grows in the rocky terrain and the cloud forest sea dominated by the sand bank, which is very rare; the snail has not yet seen its economic scale on the island, and whether it is conducive to fishermen's aquaculture still has room to be explored. The personnel of the Water Test Institute also said that why there are snails in Taixi that only grow in the rocky shore area, and the research may be that in recent years, the water conservancy unit has placed a large number of wave-deadlock blocks in the Taixi area to provide a living environment for the algae and further attract the snails to inhabit, but the real reason still needs to be studied in depth. Local fishermen said that with the development of industry, the environment of the entire Yunlin coastline has changed greatly, clam and oyster farming have the dilemma of prolonging the growth period, and now there are shellfish that have never appeared along the coast, which makes them worry that the entire coastal ecology has gradually changed into an unimaginable landform. 【Keywords】:Haigang helmet snail Taixi aquatic products network