The body is spherical, hemispherical, heart-shaped or disc-shaped. The internal organs are contained in a 1 shell composed of many calcareous bone plates that are tightly healed. The shell is covered with many movable thorns. Each pair of pin holes on the shell plate is equivalent to 1 pin, and multiple rows of Hyderabad landscape are 10. The mouth is below, and there are five white teeth in the center, which are part of the chewing organ-Aristotle's lantern. 1 sea urchin shells are made up of about 3000 small plates.
Assassin in the sea
Sea urchins, also known as stinging pots and sea hedgehogs, are spherical in shape, just like purple prickly cacti, so they have always been nicknamed "assassins in the sea". Fishermen often call it "underwater tree ball" and "dragon palace hedgehog" There are about 850 species of sea urchins in the world, and there are about 150 species along the coast of China. Common ones are horse dung sea urchin, Dalian purple sea urchin, heart-shaped sea urchin and carved sea urchin.
Sea urchin is an ancient creature in the ocean, which is closely related to starfish and sea cucumber. According to scientific research, it has existed on the earth for hundreds of millions of years. Due to the passage of time, the fossils of sea urchins were found on the Qinghai-Tibet Plateau in China. They live in the world's major oceans, with the Indian Ocean and the Pacific Ocean being the most frequent. Because they like sea areas with high salinity, they are rarely distributed near rivers and low salinity seawater, or not at all.
Sea urchin is a tool against the enemy.
Sea urchins like to live in reef forests or crevices in the sea below the intertidal zone rich in algae, and in hard and muddy shallow waters, hiding in crevices, reefs, sediments or coral reefs. It has the habit of backlighting and staying up at night, relying on thorns to defend the enemy.
The spines of sea urchins are long and short, sharp and blunt, and the structures of spines are different with different species. Hainan Island coral reef is rich in a kind of stone pen sea urchin, which looks like a blooming flower, commonly known as cigarette holder sea urchin. It can be used as a cigarette holder because of its thick thorns. Some kinds of thorns are very long, reaching more than 20 centimeters.
Reproductive infection of sea urchin
Sea urchins are hermaphroditic, and females can conceive eggs all year round and ovulate several times a year. The sea urchin, which has grown for three years, has reached the mature stage and started to perform the important task of breeding offspring. They are social animals. In reproduction, it has a strange phenomenon, that is, once a sea urchin releases germ cells, whether sperm or eggs, into the water in local waters, it will send a message to every sea urchin nearby like a broadcast to stimulate all sexually mature sea urchins in this area to ovulate or ovulate. This strange phenomenon is described as "reproductive infectious disease".
Sea urchin wrapped in treasure
Sea urchin yellow not only tastes delicious, but also has high nutritional value. Every 100g of fresh sea urchin yellow contains 4 1g of protein, 32.7g of fat, vitamins A and D, various amino acids and nutrients such as phosphorus, iron and calcium. Sea urchins can also be produced and processed into salted sea urchins, alcohol sea urchins, chilled sea urchins, sea urchin sauce and steamed sea urchins. Sea urchins can be eaten in a variety of ways, whether they are fresh sea urchin eggs (yellow) or any series of processed varieties, they can be used for steaming, frying, cold dishes or cooking soup. For example, mixing sea urchin eggs with meat, asparagus and eggs will become a delicious delicacy. Soaking noodles with sea urchin and egg soup without any seasoning is better than chicken soup noodles. If you rinse the hot pot with sea urchin eggs, the taste will be more unique. There are many expensive dishes, such as stewed sea urchin with abalone wings and stewed sea urchin with China Rana. In restaurants in Guangzhou and Xiamen, sea urchins are mostly used for steaming. Its making method is: firstly, the top of the sea urchin shell is sawed with a saw, and then an appropriate amount of egg liquid is injected from the incision, which is evenly mixed with the sea urchin eggs in the shell to steam out the original flavor, which can be described as authentic. This way of eating is suitable for all ages.
Sea urchins also have a wide range of medicinal functions. Its medicinal part is the whole shell, the shell is calcium, and the medicinal material is called "sea urchin". Sea urchin is not only delicious seafood, but also a precious Chinese herbal medicine. The medicinal use of sea urchin has long been recorded in China. "Primitive Materia Medica" records that sea urchins have the effect of "treating heartache". Modern Chinese medicine believes that "sea urchins are salty and flat in nature, and have the functions of softening and resolving hard masses, resolving phlegm and reducing swelling." . Sea urchin shell, sea urchin thorn, sea urchin yolk, etc. Can be used for treating gastric and duodenal ulcers, otitis media, etc. At the same time, sea urchin shells can also be made into handicrafts. There are also manufacturers who develop sea urchin food and make sea urchin into chilled sea urchin, alcohol sea urchin and sea urchin sauce.
However, not all sea urchins are edible, and many species are poisonous. These sea urchins look much more beautiful than nontoxic sea urchins. For example, the ring-spined sea urchin, which grows between coral reefs in the South China Sea, has black and white stripes on the thick spines and yellow stripes on the thin spines. Young sea urchins have white and green ribbons shining on their spines, and a barb grows at the tip of the fine spines. Once it penetrates the skin, the venom will be injected into the human body, and the fine thorns will break in the flesh, causing local redness and pain of the skin, and some even have poisoning symptoms such as accelerated heartbeat and general spasm.
Although sea urchins are full of thorns, they are particularly timid.
Sea urchin is a spiny animal, but it is very timid. As long as it sees the enemy, it will run away. Because they are born timid.