Sandworms, although they look scary, but in fact very docile, will not bite, it is a long cylindrical mollusk, softly wriggling, but it is exceptionally tasty and delicious, and high nutritional value, rich in calcium, magnesium. Iron and other elements, as well as rich in EPA, DHA and DPA , especially suitable for students to eat. Sandworms are also known as light naked starworms, also known as sand intestines, squared starworms and so on. It lives in the coastal mud flats along the sandy substrate of the sea, drilling out at high tide, lurking in the sandy mud holes at low tide, so the name sandworm.