When storing shrimp, it's important to distinguish between cooked and raw shrimp.
Shrimp which is cooked can be stored in a sealed bag no more than 3 days in the coldest part of your refrigerator.
Storing Shrimp Raw or Cooked
Both shrimp which is cooked and raw may be frozen, but freezing raw shrimp preserves a better flavor. Raw shrimp can be frozen with or without the shell, but the heads should be removed.
Shrimp which is raw frozen will last 6 months in the freezer while frozen cooked shrimp should be used within 2 months.
Commercially-frozen raw shrimp will last longer in the freezer without going bad, since they are flash-frozen fresh with little handling.
Both shrimp frozen cooked and uncooked is best thawed in the refrigerator in advance. They can be added to casseroles and baked dishes while still frozen.
If you need to thaw frozen shrimp quickly, put the shrimp under cold, not warm water. Warm water will start cooking the shrimp.
Shrimp can also be found canned. These are usually baby shrimp and work well as a garnish for a salad and also formed the basis of my first recipe. These shrimp should be rinsed thoroughly before using and, depending on the grade, may require a bit of picking over.