If you're squeamish about raw seafood and feeling skeptical, just look at the color. If shrimp is pink or rosy white, it's been cooked, while raw shrimp range from translucent gray to brown and ...

you want to make sure to buy a bag that says raw shrimp. These bags are usually blue; whereas cooked shrimp bags are usually pink or red. Raw shrimp will be more translucent with a brownish pink hue.