1. Choose one hundred seafood stalls with a large population. When you toss and turn, you should first choose the big one, the shell is complete, the seal is tight, and it must be alive. Because in the case that everyone is turning hard, the flower shell will not open and it will be closed. It takes some strength to open it, and it must be alive.

2, in the absence of candidates, the flower nail will stick out a little tongue in still water, and when you touch the tongue that the flower nail sticks out with your hand, it will automatically retract and be alive.

3. Without picking, the tongue of the flower nail is too long in still water, and the shell is in a half-open state. Even the body part is outside the shell. If you touch the tongue of the flower nail, it won't retract. It is dead.

Preservation of flower armor

1, salt water preservation

Flower shell is a kind of seafood. When preserving, you can use salt water to simulate the environment of seawater, add salt to the water, and then you can raise it when it comes to the surface. Keep it in a cool place and control the temperature below 10℃. The flower nail can survive for about 2 days by soaking in salt water. Usually, after soaking in salt water for about 30 minutes, the flower shell will begin to emerge and carry out activities such as breathing, feeding and excretion.

2, refrigerator preservation

Clean the flower nail, then put it into a food bag, seal the mouth of the bag tightly, and store it directly in the refrigerator. Before putting it in the refrigerator, you can also blanch it in hot water for about 3 minutes, then remove the cold water, drain the water and put it in the refrigerator for preservation.