It may be the result of green pigment precipitation caused by eating seaweed. It is considered that this kind of shrimp is a rare species with high nutritional value. Some netizens also doubt whether shrimp meat will contain a toxic chemical called malachite green. because

Some unscrupulous merchants will add such chemicals in order to keep the color and freshness of seafood products. sabotage

Crabs and shrimps turn green, mostly because phytoplankton is attached to the aquaculture waters, and they are still edible. But shrimp is only wild at present, and it is unlikely to come into contact with algae in the waters where they live, even if there is.

If you do eat it, it will only exist in the digestive tract. Even if it is not fresh, the head and chest are broken, and it is impossible to cause the flesh color to turn green. The reason why shrimp meat turns green after cooking is probably that shrimp meat is polluted.