The quality of 80-100 heads is good.

Extended reading:

Head is the quantifier for sea cucumbers. It is a traditional usage by seaside fishermen. The number of heads is used to measure the size of sea cucumbers. The number of heads generally refers to the number of sea cucumbers per 500g. For example, 30-50 heads means that there are 30-50 sea cucumbers per kilogram. , the fewer the number of sea cucumbers, the larger the sea cucumbers will be, and the nutritional value will be relatively high. Sea cucumbers vary in size and price. Generally, the largest ones are 30-40 heads, and the medium ones are 60-80 heads.

Introduction to sea cucumber:

Sea cucumber is also known as sea rat, sand cucumber, sea cucumber, etc. Classified as belonging to the phylum Echinodermata, class Holothuria. There are about 1,100 kinds of sea cucumbers in the world, and there are about 120 kinds in my country. Most of them are inedible. According to statistics, there are 40 species of edible sea cucumbers in the world. There are 20 species of edible sea cucumbers in my country. Among them, sea cucumbers from the Yellow Sea and Bohai Sea are the most valuable. ?

Sea cucumbers have existed in the Precambrian period more than 600 million years ago. It was not until the Three Kingdoms period that there were official documents. Wu Guoying's "Records of Foreign Objects in Linhai Sea" records: "The native meat is as big as a child's arm, five inches long, has an abdomen in the middle, has no mouth or eyes, and has three legs. It is eaten by burning." Among them, "local meat" refers to sea cucumber. There are records about sea cucumbers in the "Wuzazu" written by Xie Zhao during the Wanli period of the Ming Dynasty: Sea cucumbers are found on the coast of Liaodong, and their properties are warming and tonic, so they are called sea cucumbers. By the Qing Dynasty, sea cucumbers had become a delicacy at high-end banquets for famous aristocrats. ?

The body of sea cucumber is cylindrical and cucumber-shaped, 20-40 cm long and 3-6 cm wide. The cross-section is slightly quadrangular, and the ventral surface of the body is as flat as the sole of the foot. The ventral surface faces the ground, and the tube feet are arranged into irregular three longitudinal bands along the three belt areas on the ventral surface. The back is slightly raised, with large cone-shaped spurs arranged in 4-6 irregular longitudinal rows. The mouth is biased toward the ventral surface at the front end. ?

The main economic species of the Apostichopaceae family include green sea cucumber, flowering sea cucumber, plum blossom sea cucumber and sea cucumber. At present, the most valuable ones are sea cucumbers from the Yellow Sea and Bohai Sea, which are called "the crown of ginseng". ?

Sea cucumbers are distributed vertically from the intertidal zone to shallow seas with a water depth of 30 meters. It lives on rocky bottoms with calm waves, no fresh water inflow, and lush seaweed, or on harder muddy sandy bottoms with large clusters of macrophylla. Its food is small animals and plants, such as foraminifera, gastropods, flexipoda, diatoms, etc. The environmental requirements for living in the sea area are very high. If there is pollution or excessive heavy metals (lead, mercury, arsenic), it will be difficult to survive. Sea cucumbers grow slowly and take about three years to reach adulthood.