This is based on the principle that cells absorb water and lose water. When the concentration of external solution is higher than that of internal solution, Meretrix meretrix will lose water and spit sand. The higher the concentration of external solution, the faster the sand will be spit out. Therefore, if you want the clam to spit sand quickly, you can use high-concentration salt water, so that you can achieve your goal.

Save method:

1. Take a pot of water, add some salt to the water, soak the clams for 10 minutes, then take them out, cover them with plastic bags, punch holes in the bags, and store them in the refrigerator until the next morning.

2. Put the clams in a nylon bag, make it full, and compress the bag as much as possible, then put the compressed clams in a foam box and cover it with ice.