Oysters without shells can be kept for two days if they are put in water. You can keep it in the refrigerator for three to seven days. Frozen storage can be kept for 1 month. Oyster is a kind of shellfish that lives in the ocean and is suitable for living at a temperature of 4-5 degrees. If you go out to sea and store it in a high temperature environment, it is easy to die, and it will stink and deteriorate with bacteria. The storage time is not long, only 1 to 2 days. You can put it in a fresh-keeping bag and keep it in the refrigerator for 3 to 7 days. It can be stored in the freezer for 1 month. Oyster is the general name of Pinctada and mollusk of Oyster family, commonly known as oyster, oyster and so on. Shells are nearly long, round and triangular, and their shapes are extremely irregular due to the influence of external environment. The two shells are not equal. The left shell is larger and protruding, attached to life, and the right shell is slightly smaller and flat.