Mar del Plata is a city of the Atlantic Coast, in Buenos Aires Province, Argentina. It is the seat of General Pueyrredón district. Mar del Plata is the second largest city in Buenos Aires Province. The name "Mar del Plata" is short for "Mar del Río de la Plata," and means "sea of the Río de la Plata basin" or "adjoining sea to the (River) Plate region." Mar del Plata is one of the major fishing po…