Marín is a town and municipality in Galicia, Spain in the province of Pontevedra. It is located on the southern shore of the ria of Ponteved…Marín is a town and municipality in Galicia, Spain in the province of Pontevedra. It is located on the southern shore of the ria of Pontevedra, in the comarca of O Morrazo. This town is home to the Escuela Naval Militar de Oficiales.