Who is "The Sea"?

Sarah and I went to see "The Sea and Cake" play tonight at the Empty Bottle. She told me one of her always amusing stories...that some girl at her work was like, "I know Cake but I don't know 'The Sea' band." We laughed and laughed. Anywho, here is an image of my view during much of The Sea and Cake show. The second photo is Sarah after completing her allotment of pancakes, sausage and eggs.