What makes a great dive? First, it should be dark inside. Second, all the food should be fried. Third, locals only, disreputable preferred. Fourth, beer in bottles only, generally long necks. Fifth, worst neighborhood in town or at least adjacent. Magnolias Oyster House ticks all the boxes. Mrs BV and her dad split 50 steamed clams and I ordered grouper in a bun. We left satisfied.