The horseshoe crab is not edible.
The flesh of horseshoe crab contains a large molecule of non-specific protein allergenic substances, eating horseshoe crabs can trigger skin allergic rashes, redness, swelling and scratching, which can lead to anaphylactic shock or lethal toxic reaction in severe cases, and the mortality rate of the poisoning is high.
This phenomenon was reported in the third issue of the Chinese Journal of Marine Drugs in 1988 by Liang Guangyao of the Guangxi Institute of Oceanography, who reported the "preliminary report on the toxicity of horseshoe crabs along the coast of Guangxi", which is consistent with the situation.
Expanded Information:
According to the medical research shows that: this heavy metal into the human body with the circulation of the blood is mainly accumulated in the liver and kidneys, on the liver, The kidney insufficiency, can accelerate the development of liver cell necrosis or cirrhosis and cause renal failure and ammonia poisoning and other complications. In addition, this kind of quality can also lead to human hematopoietic dysfunction and affect the normal development of the nervous system of young children.
Baidu Encyclopedia - Horseshoe Crab