Old Line Fish Co. got its start at the Anne Arundel Country Farmers' Market and transitioned to a community-supported fishery when the founders realized no such organization existed in the area. Community-supported fisheries, or CSFs, are common along the West Coast, in New England and farther down the East Coast, but there had been none in the Mid-Atlantic. The new CSF filled a gap in seafood-rich Annapolis and provided a new avenue for consumers to get seafood caught no more than a day or two earlier in the Chesapeake Bay.