In the middle of life, I eat with friends evenly, and I like to eat seafood, but if I eat it randomly, I may have problems eating.
Let me introduce you to a kind of seafood that can not be eaten randomly! It is: Horseshoe!
What is a horseshoe crab? For people living inland, most people don't know. The horseshoe crab is one of the oldest creatures on Earth, and like platypus, rabbits, kangaroos, whales, and cockroaches, its form has not evolved for hundreds of millions of years.
The species of horseshoe crab are divided into four kinds: American horseshoe crab, Chinese horseshoe crab, southern horseshoe crab and round-tailed horseshoe crab, of which round-tailed horseshoe crabs are the smallest individuals, and contain high toxicity, accidental ingestion can cause poisoning and even death, generally mainly used for ornamentation.
Chinese horseshoe crab is a delicacy in coastal areas, every summer when the horseshoe crab breeds, a large number of horseshoe crabs climb on the beach, it is easy to be caught by fishermen, but these Chinese horseshoe crabs are often mixed with highly toxic round-tailed horseshoe crabs, and the coastal areas are at this time of year due to the high incidence of poisoning due to eating horseshoe crabs.
Horseshoe crab has high medical value, the blood of the horseshoe crab contains copper ions, its blood is blue. This extract of blue blood, the "horseshoe reagent", can accurately and quickly detect whether the body's internal tissues are causing disease due to bacterial infections; in the pharmaceutical and food industries, it can be used to monitor toxin contamination; and scientists also use horseshoe's blood to study cancer.
However, due to the deterioration of the ecological environment caused by seawater pollution, which directly threatens the reproduction and survival of the horseshoe crab, the Chinese horseshoe crab and the southern horseshoe crab are listed as endangered in the "Red List of Species in China", and the round-tailed horseshoe crab is listed as vulnerable.
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