Shucked oysters will generally stay fresh for 4 to 7 days if they are kept in a refrigerator with temperatures below 35 degrees Fahrenheit to prevent bacterial growth and spoiling. Oysters that are kept at temperatures above 40 degrees Fahrenheit will spoil much quicker. Most shucked oysters can be kept until they have reached the expiration date that was placed on their container.
If the oysters were shucked at home, remove and dump the shells and store the shucked oysters in a shallow, water-proof container in a freezer that maintains a temperature below 0 degrees Fahrenheit. Only shuck oysters that are fresh. Dead oysters will not close their shells even after the shells have been lightly tapped from the outside.
To thaw shucked oysters that have been stored in a freezer, place them in a refrigerator. Do not thaw the oysters at room temperature, as this will only cause the oyster meat to spoil.
Be careful when eating oysters and make sure that they are not spoiled. Dead shellfish can harbor an abundance of bacteria that can easily cause disease and illness. Make sure that all shucked oysters are properly cooked. Do not attempt to eat them raw.