To revitalize an industry more than 100 years old, canned tuna companies may have found the secret -- change the way we perceive and eat tuna. At stake are annual sales of over $1.3 billion. Chicken of the Sea International's latest innovation may change the way consumers enjoy an American standard -- tuna salad. The Tuna Salad Kit, unveiled today by the San Diego-based company, comes months after Starkist introduced tuna in a vacuum-sealed pouch.