Kirkland Signature Wild Chilean Sea Bass (Patagonian Toothfish) is sourced from MSC-certified sustainable fisheries in regions including the Falkland Islands, South Georgia, Macquarie Island, and Heard and McDonald Islands. Each piece is hand-trimmed, skinless, and boneless, individually vacuum-packed in 4 oz to 6 oz portions for convenient meal preparation. This product is sold by the pound from the fresh seafood counter and was previously frozen.

The fish is prized for its rich, buttery flavor and tender, flaky texture that works well with a variety of cooking methods including pan-searing, baking, broiling, and grilling. Costco's sourcing policy ensures full traceability from the specific fishing vessel to the retail shelf, with each package labeled with the FAO fishing area and country of origin.