1. If the lobster is blue, see the following two situations:

If it is a marine blue lobster, it can be eaten because this type of lobster is a genetic variation of the American lobster. , relatively rare, but edible.

If you buy blue lobster from the market, you cannot eat it. The reason is that it is suspected that the living environment of lobsters is polluted, causing the water to contain heavy metals, or the feed contains additives, which will cause the lobsters to change color. It is best not to eat such lobsters.

2. If it is seawater shrimp, there are two types that are blue and edible.

Chinese prawns: large in size, female shrimps are blue-green, males are brown-yellow, and the shells are thin.

Blue shrimp: The head and body are clearly separated, the cephalothorax is thick, and gradually tapers from the abdomen. The body color is green-blue, mixed with brown-green markings.

Extended information:

Methods to identify the freshness of shrimp:

1. The shape of fresh shrimp is curved. Fresh shrimps have complete head and tail, which are closely connected with the body. The body of the shrimp is relatively straight, with a certain degree of elasticity and curvature. On the other hand, for stale shrimp, the head and body, shell and meat are loosely connected, and the head and tail are easy to fall off or separate, and cannot maintain their original curvature.

2. The body surface of fresh shrimp is dry. The surface of the fresh shrimp body is clean and feels dry to the touch. But when the shrimp body is about to deteriorate, the mucus-secreting granular cells under the carapace disintegrate, and a large amount of mucus seeps onto the body surface, making it feel slippery to the touch. If the shrimp shells stick to your hands, it means the shrimp has gone bad.

3. Fresh shrimps are bright in color. Different types of shrimp have slightly different colors. Fresh prawns, shrimps, and grass shrimps are green, sea-caught prawns are pink, and bamboo shrimps and prawns have black and white patterns with a hint of pink. If the shrimp has black hair, it means it is not fresh. If the whole shrimp is darker and not bright, it means it has gone bad.

4. The shells of fresh shrimps are tightly connected. Fresh shrimp shells and shrimp meat are very tightly glued together. When peeling the shrimp meat with your hands, the shrimp meat will stick to your hands and you will need to use a little effort to peel off the shrimp shells. The intestine tissue and shrimp meat of fresh shrimp are also tightly adhered. If they become loose, it means that the shrimp is not fresh.

Reference materials: Baidu Encyclopedia - Shrimp

Reference materials: People's Health Network - Eat prawns plainly

Reference materials: People's Health Network - Pay attention to 5 things when eating shrimps Taboo teaches you how to identify the freshness of shrimp