If I just bought oysters and scallops and am going to keep them for two days before eating them, do not clean the scallops and oysters first. They can be wrapped in plastic wrap and stored in the refrigerator freezer for a long time. Scallops and oysters can also be stored on frozen ice.

When buying shellfish and seafood, we should make sure that the shellfish is fresh. Fresh oysters, clams, and scallops have closed shells. Check the packaging of frozen shellfish to make sure it is not opened and that there are no small frost or ice crystals on the bag. Excessive frost means long periods of freezing. Some seafood is thawed and refrozen.

Expanded Information:

EDIBLE PORTIONS OF THE SCALLOP: The edible parts of the scallop are the white muscle, the lamellar red or white gonads, and the skirts; the black digestive glands and gill structures are not edible. The scallop's digestive glands are the animal's equivalent of water.

There are excreted wastes, toxins, heavy metals or sediments that should be removed before cooking to avoid contamination of other edible parts. Note that the edible parts of the scallop must be fully cooked and not eaten raw.

People's Daily News - scallops, black parts to be thrown away