The Cantabrian Sea is in the Atlantic Ocean and laps the northern coast of Spain and the south western coast of France. It stretches from the province of La Coruna to Brest in Finisterre, Brittany. In the East, on the Basque coast, it is known as the Bay of Biscay and the Bay of Gascony. North-westerly winds are common, and together with the magnitude of the tides they make it a rough sea with frequent undercurrents and very high waves. It was baptized by the Romans in the 1st Century B.C. as the Cantabricus Oceanus (Ocean of the Cantabri) and in older classical references it is referred to as Gallicus Oceanus. This selection of Cantigas of Holy Mary embraces the local miracles related to this sea. Reference is made to the sanctuary of Rocamadour in France and to the church of Laredo in Cantabria and churches in the Basque Country in Spain. The songs are about miracles involving the clergy and take place in maritime surroundings as in the case of Cantiga 244 in which an irreverent man prefers the tavern to the church to celebrate the capture of a whale, or Cantiga 248 in which two sailors fight to death with knives in the church, or Cantiga 112 in which a storm in the Cantabrian Sea forces the crew to abandon a ship that carried wheat from Colliure. We have included Cantiga 209 in this selection, which makes biographical reference to the life of the Wise king in Vitoria, where his illness was cured by putting the voluminous codex of the Cantigas on his chest. Holy Mary’s curative power was confirmed as well as the value of the songbook itself which the king took with him on his travels. He in fact was the author, with the help of his poets, musicians and illustrators. Most of these Cantigas, with their miniatures, are preserved in the Codex of Florence, the second best known illustrated volume that belonged to the royal chamber. Cantigas 244 and 343 are only in the “Musicians’Codex”, preserved in San Lorenzo de El Escorial in Spain. This codex was translated into Castilian Spanish by Professor Joseph Snow especially for this recording.