Why is the difference between northern sea cucumber and southern sea cucumber so great?

Sea cucumbers, belonging to the order holothuroidea, are marine echinoderms that live up to 8,000 meters above seashore, with a history of more than 600 million years, and feed on seabed algae and plankton. Sea cucumbers are covered with flesh and spines and are widely distributed in the world's oceans. There are many kinds of sea cucumbers along the coast of the South China Sea in China, about 20 kinds of sea cucumbers can be eaten, and sea cucumbers are on a par with ginseng, bird's nest and shark fin soup, and are one of the eight treasures in the world. Sea cucumber is not only a precious food, but also a valuable medicinal herb. According to the "Compendium of Materia Medica", it is recorded: sea cucumber, sweet and salty, kidney tonic, beneficial essence, urine, aphrodisiac treatment, its sexual warmth supplement, enough enemy ginseng, so the name of sea cucumber. Sea cucumber has the effects of improving memory, delaying gonadal aging, preventing arteriosclerosis and anti-tumor. With the popularization of sea cucumber value knowledge, sea cucumber has gradually entered the people's table. The living environment determines the quality of sea cucumbers. The mouth of the sea cucumber is at the front end, mostly on the ventral surface. The anus is at the posterior end, mostly on the dorsal side. There are generally wart feet on the back and tube feet on the ventral surface. The endoskeleton degenerates into tiny bone fragments. Many species have 5 rows of tube feet from mouth to anus. The anal foramen is used to breathe and drain waste. The body of the sea cucumber is cylindrical, 10 to 20 cm long, up to 30 cm large, dark in color, and succulent and prickly. Tentacle wheel shape, 17 to 30, generally 20. The tentacles and hand altar sacs are developed. Sea cucumbers breed earlier on earth than primitive fish, probably more than 600 million years ago in the Precambrian Period, is the earliest living biological species, known as marine living fossils.

Sea cucumbers are widely distributed in the world's oceans, mainly in the Indian Ocean and the western Pacific Ocean. Sea cucumbers are commonly found in tropical and subtropical oceans, and are particularly found in coral reefs in the Indo-Western Pacific. Some are bare, some are hidden, some are drilled in the sand, and some species are only found in coral reefs.

Sea cucumbers are also distributed in many parts of China, with more than 30 species produced in the South China Sea alone, mostly in the Paracel Islands, and temperate sea areas dominated by the Shandong Peninsula and the Liaodong Peninsula. China's northern and southern seas are produced sea cucumbers, the Yellow Bohai Sea region produced liao ginseng as early as the Qing Dynasty, by the knowledge of the high esteemed sea cucumber products, well-known at home and abroad, and as the only sea cucumber to enter the pharmacy, the Ming Dynasty was included in the Materia Medica. "Materia Medica" points out: "Sea cucumbers, produced in the Liaohai are good. ”

The main production area of China's domestic sea cucumber production area is mainly the northern sea cucumber and the southern sea cucumber, the northern market has formed two mainstream plates dominated by Liaoning sea cucumber and Shandong sea cucumber, and the emerging plate represented by Fujian has emerged in the south.

Dalian sea cucumber is the best developed sea cucumber market in the north, sea cucumber is dominated by wild, product deep processing, steady regional expansion and cost-effective sea cucumber products have formed many well-known brands in the country. Dalian sea cucumber is a specialty of Dalian City, Liaoning Province, and is very famous throughout the country. Dalian sea thorn ginseng, the flesh is thick, the spines are full, and the taste is very good. Loved by consumers across the country.

Dalian sea cucumber

Liaoning sea cucumber

On September 15, 2015, the Trademark Office of the State Administration for Industry and Commerce officially accepted the application and examination of the "Dalian Sea Cucumber" geographical indication certification trademark. On January 14, 2017, the Trademark Office of the State Administration for Industry and Commerce issued an announcement that "Dalian Sea Cucumber" was officially registered as a geographical indication certification trademark.

Dalian sea cucumber is the most natural and humanistic elements of Dalian marine treasures, local specialties and city business cards. Dalian embraces the two seas of Huangbo and Bohai, the coast is tortuous, there are many islands and reefs, the water is vast, and the Dalian sea cucumber produced is famous at home and abroad. Dalian is the hometown of sea cucumber, of which Changhai County Yugong Wharf is the main producer of high-quality sea cucumbers in China and even in the world, the annual output of sea cucumbers in the city is about 50,000 tons, the output accounts for 91% and 27.5% of Liaoning Province and the whole country, and the output value of the whole industrial chain is 20 billion yuan. The sea cucumber industry has become the dominant industry and pillar industry of Dalian's fishery economy.

Liaoning dried sea cucumber mainly with Dalian as the core to start relatively early, belongs to the traditional sea cucumber breeding base, the consumer market is mature, the product variety is rich and there are many big brands: Yugong Wharf, Haiyantang, Minghai Junyue, Pinyipin, Old Ginseng, Sea's Brewery, the market open space is large, in the stage of market development is very competitive, Liaoning's sea cucumber is also called Liao ginseng, produced in the Liaodong Peninsula, located at 39 ° north latitude, is the most suitable growth environment for sea cucumbers, of which changhai County Yugong Wharf sea cucumber is the best, meaty fat, taste strong, In ancient times, it was a royal dish for the royal family. Liaoning sea cucumber is 10 percentage points higher than the protein of Shandong sea cucumber and Fujian sea cucumber, because it grows in cold water all year round, the growth is slower, and it takes about 3 years to grow to 32 sea cucumbers, and the body is rich in nutrients.

Shandong sea cucumber

Shandong sea cucumber with Yantai, Weihai and Qingdao as the core, has become the most important and fastest growing sea cucumber plate market in the north, the plate is dominated by wild bottom-sown sea cucumbers, large-scale sea bottom-sowing, product deep processing, steady regional expansion and high cost-effective sea cucumber products have formed many well-known brands in the country. Among the Weihai sea cucumbers, it is also the best Tadao Bay thorn ginseng. In May 2011, Tadao Bay was identified by the State Oceanic Administration as one of the second batch of national marine special protection areas, with fertile waters.

The southern sea cucumber is fujian as the core to form China's fastest growing industrial force in recent years. Fujian, Zhejiang and other relying on the southern temperature difference of the breeding advantages, shorten the growth cycle of sea cucumbers, the formation of large-scale sea cucumber farming, with product research and development, processing technology, production cost advantages, southern sea cucumbers aimed at the low-end and mass consumer market, but in recent years due to the speed of breeding and channel expansion is weak, is encountering a cold snap.

This article was co-edited by HeadlinePedia users.