It seems in Maryland you'll find two things on every menu, seafood and chicken. The Chesapeake provides the seafood and there are thousand of commercial chicken farms for food. The ethnic eateries such as Mexican, West Indian, Jewish, Italian, Chinese and other restaurants can also be found in MD.
Clams, crabs and oysters do require more hands on processing so seafood tends to be more expensive on the menu. The tomato based Maryland crab soup and crab cakes are something every visitor to Maryland should try. Bay oysters were once plentiful so most of them served on menus are from elsewhere. Rockfish, striped bass, is still fresh from the Chesepeake Bay.