Farm-raised Black Tiger Shrimp sold by the pound from Costco's fresh seafood counter. The U-12 designation means fewer than 12 shrimp per pound, indicating colossal-sized shrimp ideal for grilling, searing, or steaming. Black Tiger shrimp (Penaeus monodon) are known for their firm texture, mild sweet flavor, and distinctive dark striping on the shell. These shrimp are previously frozen and thawed for convenience, sourced from farm-raised operations typically in Southeast Asia. They are sold shell-on and head-off, making them easy to prepare for a variety of dishes including shrimp cocktail, scampi, and stir-fry.