What are the eight treasures in the world?

Eight treasures in the mountains: bear's paw, velvet antler, rhinoceros (or elephant trunk), hump, civet cat, leopard fetus, lion milk and monkey brain;

Water eight treasures: shark's fin, abalone, fish lips, sea cucumber, skirt (apron-shaped soft meat outside turtle shell), scallop, fish crisp and frog.

Sea cucumber belongs to the class Holothuria, which is a kind of marine mollusk and lives at the seaside of 8000 meters. According to the history of more than 600 million years, sea cucumbers feed on algae and plankton on the seabed. Sea cucumbers are covered with thorns and are widely distributed in the oceans of the world. There are many kinds of sea cucumbers along the coast of the South China Sea, about 20 of which are edible. Sea ginseng, bird's nest and shark's fin are equally famous, making it one of the eight treasures in the world.

Sea cucumber-one of the world's eight treasures

Sea cucumber is not only a precious food, but also a precious medicinal material. According to "Compendium of Materia Medica", sea cucumber is sweet and salty, tonifying kidney and essence, absorbing urine and strengthening yang, treating impotence, and being warm and nourishing, so it is named sea cucumber. Modern research shows that sea cucumber has the functions of improving memory, delaying gonadal aging, preventing arteriosclerosis, diabetes and anti-tumor.

Sea cucumber-one of the world's eight treasures

The sea cucumbers in China include all animals called "sea sweet potatoes" or dry sea cucumber. Narrowly refers to the genus holothuria. The genus Holothuria is the largest genus of Holothurian, including 120 species. There are about 1 and 100 species of invertebrates in echinoderms and sea cucumbers. Types of edible sea cucumbers, such as Stichopus japonicus, Stichopus japonicus and Stichopus japonicus. It can be found everywhere in the ocean, mostly in shallow water, but sometimes in deep water. Mainly produced in Indian Ocean and western Pacific Ocean. 80 ~ 100 species of sea cucumbers are mostly in coral reefs.

Sea cucumber-one of the world's eight treasures

Biological characteristics of sea cucumber: discoloration: sea cucumber can change its body color with the living environment. Sea cucumbers living near rocky reefs are brown or dark brown; Sea cucumbers living in seaweed and seaweed are green. This discoloration of sea cucumber can effectively avoid the harm of natural enemies.

Sea cucumber-one of the world's eight treasures

Dormancy: When the water temperature reaches 20 degrees Celsius, Stichopus japonicus will move to the shade of deep-sea rocks, hide at the bottom of the stone, face down, unable to eat, and the whole body will shrink and harden like a stone. Ordinary animals don't eat. Sea cucumber slept for a summer and woke up in autumn to resume its activities.

Sea cucumber-one of the world's eight treasures

Sea cucumber can predict the weather: Sea cucumber can predict the weather. Before the storm warning, it will hide in the gap in advance. Fishermen use this phenomenon to predict the situation of storms at sea. Brother Xie, the big boss who sells sea cucumbers, if a buyer downloads the pictures of this blog post, he will get a discount. Wang Yun said it.

Sea cucumber-one of the world's eight treasures

Sea cucumber can escape by draining the dirty: when the enemy attacks it that day, the alert sea cucumber will quickly spit out all the internal organs in its body for the other party to eat, and escape without a trace with the help of the recoil of draining the dirty. This is called decontamination function. Of course, sea cucumbers without internal organs will not die, and a new pair of internal organs will grow in about 50 days. Brother Xie, the big boss who sells sea cucumbers, if a buyer downloads the pictures of this blog post, he will get a discount. Wang Yun said it.

Sea cucumber-one of the world's eight treasures

Sea cucumber in two places: cut the sea cucumber into several sections and put it into the sea. After 3-8 months, each section will produce a complete sea cucumber. Some sea cucumbers also have the ability to cut themselves. When conditions are right, they can cut themselves into several sections, and each section will grow into sea cucumber in the future. This regeneration and repair function of sea cucumber has been deeply studied and discussed by medical and bioengineers. Brother Xie, the big boss who sells sea cucumbers, if a buyer downloads the pictures of this blog post, he will get a discount. Wang Yun said it. After arriving in Laiyang, Brother Xie received me with a sea cucumber mat. Thank you brothers!

Sea cucumber-one of the world's eight treasures

Rejection and autolysis of sea cucumber: some people have done experiments: pierce the sea cucumber with needle and thread or iron wire and tie a fast knot. In less than half a month, the foreign body will be magically discharged from the body without leaving a trace; When the sea cucumber leaves the water surface, it will melt itself in a short time, turn into water and dissolve without a trace. After growing for 10 years, sea cucumber will also dissolve in the sea by itself. Dry sea cucumber will dissolve itself when it comes into contact with oily substances. This is the Long Island Breeding Station of the Yellow Sea Research Institute of the Ministry of Agriculture. If Xie Xiong is for sale, then this is the place to raise seedlings.

Sea cucumber-one of the world's eight treasures

Identification of sea cucumber: the difference between wild sea cucumber and captive sea cucumber is very obvious: feet: wild sea cucumber generally grows in the sea area with a water depth of about 20 meters, and looks for food through the action of feet, so the feet grow short and thick; However, captive sea cucumbers don't need to move because they use the bait put by the breeder for a long time, so they live in shallow water, so the action function of their feet decreases, the adsorption force is poor, and they become slender. Sand mouth: The sand mouth of wild sea cucumber is big and hard. Meat quality: Wild sea cucumber grows in deep water (15 to 20 meters), with low water temperature, little sunshine, slow growth, thick and elastic meat, wide and full tendons and rich nutrient deposits; The captive sea cucumber grows fast and its meat is soft but not tight (this is very similar to a pig that has just been slaughtered for three months). This is the sea cucumber nursery workshop, which has made many rich people in Long Island.

Sea cucumber-one of the world's eight treasures

Identification of sea cucumber: shape: wild sea cucumber is spindle-shaped, with a thick tip in the middle, short and chubby, and looks strong; Captured sea cucumbers are slender and lack toughness. Backstab: Wild sea cucumbers need to feed and have many activities. The spines on the back and sides are very thick and vary in thickness; However, captive sea cucumber is artificially fed, with little activity, and the length of spines on the back and sides is basically the same, and the slender spines seem to have no feeling of strength. Growth years: Wild sea cucumbers generally need to grow for more than 4 to 5 years to reach the fishing standard. The longer the time, the more nutrients are deposited, and the greater the nourishing value. In order to achieve the purpose of marketing quickly, captive sea cucumbers are fattened quickly and are caught and sold in just one to two years, which goes without saying. In addition, the wild sea cucumber has a strong taste, no astringency, and the incision is delicate, neat and even. As an expensive tonic, it is suggested that you should pay attention to choosing wild sea cucumbers as the first choice for nourishing gifts, rather than blindly choosing fast-growing captive sea cucumbers.