Colossal-sized farm-raised white shrimp (Litopenaeus vannamei) sold fresh by the pound from Costco's seafood service counter. The "U-12" designation means "under 12 per pound," indicating fewer than 12 shrimp per pound — classifying them as colossal in size, among the largest shrimp available at retail. These have been previously frozen and thawed for convenience at the counter.

Farm-raised white shrimp is the most widely cultivated shrimp species in the world, primarily sourced from farms in India, Thailand, Ecuador, and other regions. The mild, subtly sweet flavor and firm texture make U-12 shrimp ideal for grilling, pan-searing, sautéing in a garlic butter scampi, steaming, or serving as a dramatic centerpiece in shrimp cocktail and seafood platters. Their large size holds up well to bold marinades and high-heat cooking methods.