How many kinds of sea cucumbers are there? Which sea cucumbers can't be eaten? According to records, there are more than 1,1 kinds of sea cucumbers in the world, and there are more than 14 kinds in China. In China's coastal areas, the number of sea cucumbers is the largest, and China is also a big exporter of sea cucumbers. Although there are many kinds of sea cucumbers, most of them are inedible, but there are only more than 4 kinds of sea cucumbers that can be eaten. Fortunately, the number of sea cucumbers in China accounts for as many as in the world.

According to whether there are cone-shaped wart feet on the back of sea cucumbers, they can be divided into two categories: "Stichopus japonicus" and "Optical Ginseng". Among them, "Stichopus japonicus" is mainly the species of Stichopus japonicus, and "Stichopus japonicus" is mainly the species of Stichopus japonicus, Cucurbitaceae and Apocynaceae.

Stichopus Japonicus: Stichopus Japonicus

Stichopus Japonicus includes Stichopus Japonicus, Stichopus Japonicus, Stichopus Japonicus and Stichopus Japonicus. Types of sea cucumber

Apostichopus japonicus is also called Apostichopus japonicus, Apostichopus japonicus, Apostichopus japonicus, Apostichopus japonicus and sea rat, which is also known as Apostichopus japonicus. It is 2-4 cm long, cylindrical, and has 4-6 rows of irregular conical spines (called wart feet) on its back. The ventral surface is flat, and the tube feet are dense, which are arranged in irregular three rows of longitudinal zones, and are used for adsorbing rocks or crawling. The mouth is located at the front end, biased towards the ventral surface, with 2 lintel tentacles, and the anus is biased towards the back; The skin is slimy and muscular, and the body can stretch or curl. The size, color and the number of stings often vary with the living environment. The water in the habitat is slow and steady, there is no fresh water injection, and the fine sand seabed and rocky reef bottom rich in algae are out at night. Sleep in summer when the water temperature is high in summer; When the environment is not suitable, there is a phenomenon of dirty discharge; The regeneration ability is very strong, and it can be regenerated after being damaged or cut. Stichopus japonicus is distributed in Penglai sea area at the junction of the Yellow Sea and Bohai Sea in China, Liaoning, Shandong and Hebei coastal areas. It is mainly produced in Qingdao, Dalian, Changshan Island, Weihai and Yantai. The fishing period is from November to June of the following year, especially in June and December, and July-September is the summer sleeping season for Stichopus japonicus. Stichopus japonicus has a thick and soft wall, which is one of the best quality sea cucumbers and is known as the "crown of ginseng".

plum ginseng is also called pineapple ginseng. The body length is generally 6-75 cm, the longest is 1.2 m, the width is about 1 cm, and the height is about 8 cm. It is the largest kind of holothurian. The back spines are very large, and the bases of every 3-11 spines are connected in a plum blossom shape, hence the name "Plum Blossom Ginseng". It is also called "pineapple ginseng" because it looks like a pineapple. Bone fragments in the skin are very simple, one is tiny, overlapping and dense granular bodies; The other is an irregular X-shaped body that is slender and branched 2-3 times. When living, the body color is gorgeous, the back is orange-yellow or orange-red, and yellow and brown spots are scattered; The ventral surface is reddish; The tentacles are yellow. Habitat in coral sand bottom with water depth of 3-1m; Distributed in the southwest of the Pacific Ocean, China is mainly produced in the Xisha Islands in the South China Sea. It is big, thick and of good quality, and it is the best edible sea cucumber in Nanhai, China.

green stichopus japonicus is also called square column stichopus japonicus; Stichopus Japonicus, also known as Yellow Stichopus Japonicus, White Stichopus Japonicus and Square Stichopus Japonicus, are very common edible sea cucumbers in the South China Sea, with high yield and too tender.

optical ginseng: Holothuriaceae

Holothuriaceae contains nine kinds of sea cucumbers, which is the most diverse family:

White ginseng with pattern is also called white cucumber ginseng, white milk ginseng and two-spotted ginseng. It is fat, with almost the same width at both ends, resembling wax gourd, and its body color changes greatly when it lives, with a white or light yellow background; The back is slightly yellowish brown, and there is a reddish-brown horizontal spot before and after, so it is called "Erbanshen". It is a large edible sea cucumber with thick and tender meat.

white ginseng of snake order is also called tiger fish, leopard fish and grouper. Its back is dark gray, with yellow snake-like markings, arranged in an irregular vertical line, living in the sand bottom of tropical coral reefs with a few seaweed, and the water depth is 6-18 meters, and the meat is fat and tender.

The radial anal ginseng is also called stone ginseng and cucumber ginseng. White-bottomed radial anal ginseng is also called boots ginseng and red melon ginseng. The black-rumped anal ginseng is also called black ginseng. These three kinds of sea cucumbers are large edible sea cucumbers living in Xisha Islands, Nansha Islands and other sea areas, with good quality but low yield.

In addition, there are black sea cucumber, jade foot sea cucumber, black milk sea cucumber and rough sea cucumber, all of which are common edible sea cucumbers in Nanhai, China, with poor quality.

optical ginseng: Cucurbitaceae

Cucurbitaceae includes three kinds of Cucurbitaceae: square-column Cucurbitaceae, naked Cucurbitaceae, and tumor Cucurbitaceae, all of which have poor edible quality because of their hard body walls.

optical ginseng: Araliaceae

Araliaceae includes two kinds of sea cucumbers and sea cudgels:

Sea sweet potatoes, also known as eggplant and sea eggplant, are very similar in shape and color to sweet potatoes, so this kind of sea cucumber is called "Sea Sweet Potato". The body is spindle-shaped and generally 4-12 cm long. When living, the body is flesh red, and the body wall is thin and translucent. After drying, the back is brown and black, and the abdomen is light brown.

sea mallet, also known as sea mouse, has a smooth body surface, no tube feet or stings, a grayish brown or yellowish brown body when living, a thin and translucent body wall, a little perspective on its longitudinal muscles and internal organs, and low edible value. Source youth guide network)