The body of Squid is long and narrow, and slightly flat. The head and breastplate only cover the first four sections of the head and chest, and the last four chest sections are exposed and can move. There is a pair of compound eyes with handles. These two joints can move at the front end of the head. The abdomen is wide, ***6 segments, and finally there is a wide and short tail segment, which forms a tail fan with the last pair of appendages of the abdomen. The mouth is located between the two jaws on the ventral surface. The anus opens on the ventral surface of the caudate segment.

Squilla live in caves, and often dig caves in the sand bottom or sediment bottom of shallow sea, and the caves are mostly U-shaped. Stomatopod is carnivorous and preys on small invertebrates. This kind of animal can make sound by rubbing the ventral surface of the caudal segment with its tail limb or striking it with a skimming limb.

colorful shrimps: they are the same size as ordinary shrimps, but they are colorful and eye-catching. These shrimps are colorful: the head is orange, like wearing a rockhopper; The back is covered with a long tsing yi, like a painting; Two colorful tails, golden yellow and purple, are like the wings of two colorful butterflies. These shrimps are more expensive, but when cooked, they are no different from other shrimps: they all turn orange. Director Wan of the Water Technology Station of Quanzhou Ocean and Fisheries Bureau introduced that this kind of colorful shrimps is called odontoid shrimps, which has nothing to do with pollution or dyeing. He said that there are more than 3 species of shrimps, and most of them are white and gray, which live in offshore waters and are easy to salvage; Colored shrimps generally live in the bottom of the sea below 7 meters and are distributed in China, Japan, the western Pacific and other sea areas; Living in the deep sea, it is difficult to salvage. Fishermen generally call colorful shrimps "Qinglong". According to the analysis of director Wan, the color of the odontoid crayfish may be related to its living environment in the deep sea. The deep sea is dark, and the dark green back of some crayfish may be a protective color; However, why is it colorful? stationmaster Wan said that this has not been studied.