Islet of O Santo do Mar Curiosity · Marín, Morrazo, Pontevedra Image of Marín, not of the place itself. A tiny island of little more than a hectare and a half and fourteen metres in height off the coast of Marín, which can be reached on foot along a tongue of sand when the tide falls far enough. Photo: Paco Copyright: GFDL Publicada por/Publish by: Ima (CC BY-SA 3.0) What to see and do in Marín