Depending on the temperature of the environment, the dead can eat. No more than 18 hours in winter and no more than 4 hours in summer. Meretrix meretrix spits mud in fresh water, and it takes a short time to spit mud with a little salt or cooking oil. Proper salt can prolong the survival time of Meretrix meretrix.

1, Meretrix meretrix, mollusk, egg-shaped shell, light brown, purple edge, lives in shallow sea bottom, and there are many varieties such as Meretrix meretrix, Meretrix meretrix, Xishi Tongue, etc. Its meat is very delicious, known as "the freshest in the world" and "the highest in all tastes", and its nutrition is also very comprehensive. It contains protein, fat, carbohydrate, iron, calcium, phosphorus, iodine, vitamins, amino acids and taurine, with low heat energy, high protein and low fat. It can prevent and treat chronic diseases of middle-aged and elderly people, so it is a cheap seafood.

2. The oldest clam found at present is 507 years old (unfortunately, researchers killed it during the research). In addition, clams are also known as one of the five immortal beasts on earth.