Can seafood industry get Americans to eat local fish?

Off the coast of Cape Cod, Massachusetts, there's not much cod left, but there's plenty of dogfish. It's a creature most Americans have never heard of, much less consumed. Instead, Americans are eating imported tuna, salmon and shrimp, in a pattern that could wipe out the U.S. fishing industry. NPR News' Allison Aubrey reports on a company that's promoting seafood caught at home.