Speaking of blue blood, it is estimated that many friends will think of blue aliens in science fiction movies. After all, normal people and other animals bleed, but there is nothing strange in the world. In the ocean, there is a very strange animal whose blood is blue. This animal is the horseshoe crab. After hearing this name, most people may guess what kind of crab it is. In fact, horseshoe crab is not a crab, but an animal similar to a crab, not a crab. It has nothing to do with crabs, but with scorpions, spiders and extinct trilobites. The scientific name of limulus is limulus, limulus, limulus, limulus, limulus, limulus, limulus, limulus, limulus, limulus, limulus, limulus. Horseshoe crab horseshoe crab horseshoe crab horseshoe crab horseshoe crab horseshoe crab horseshoe crab crab crab crab crab crab crab crab crab crab crab crab

Horseshoe crabs are widely distributed, and they can be seen in almost any country near the sea, especially when the tide is low, large areas of horseshoe crabs can often be seen crawling on the beach, but this is a thing of the past. Compared with the past, horseshoe crabs are very rare now, and even in some countries near the sea, horseshoe crabs have almost disappeared. The reason for this situation is not horseshoe crabs.

It is unique to horseshoe crabs, but this unique function has also brought a fatal blow to horseshoe crabs. So what is the value of horseshoe crab blood? Anyone who goes to the hospital for an injection or enjoys modern treatment should thank horseshoe crab, because the horseshoe crab reagent made of its blue blood can accurately and quickly detect whether the internal tissues of human body are sick due to bacterial infection, so that doctors can quickly determine whether you are sick or not. Detection and quantification of endotoxin in radiopharmaceuticals, vaccines and other biological products, various liquids, foods and dairy products. The blue blood of horseshoe crabs has successfully propagated to modern times from 400 million years ago. However, due to its precious blue blood, horseshoe crabs were killed in large numbers or even crazily. Please do not include endangered animals in China's key protection, and it is forbidden for any unit or individual to capture, domesticate and breed.

Cultured horseshoe crab does exist in China and other countries/regions, but horseshoe crab is a very slow-growing animal. Friends who breed fish and shrimp should know that these aquatic products can walk out of the pond after half a year or a year, but this horseshoe crab is different. Its growth period is very slow. In the natural environment, it takes 15 years to grow to the point where blood can be collected, although artificial reproduction is shortened. Who can spare the time? This has led to the overfishing of wild horseshoe crabs to the bottom of almost extinction. Horseshoe crab is a very precious animal, but you shouldn't treat it like this. I hope everyone can protect this animal. If you see it on the beach, please don't step on it, don't scratch it, don't eat it, or you will really wait for it to become extinct.