Mont-Saint-Michel (French pronunciation: [lə mɔ̃ sɛ̃ miʃɛl]; Norman: Mont Saint Miché; English: Saint Michael's Mount) is a tidal island and mainland commune in Normandy, France. The island lies approximately one kilometre (one-half nautical mile) off France's north-western coast, at the mouth of the Couesnon River near Avranches and is 7 hectares (17 acres) in area. The mainland part of the commune is 393 hectares (971 acres) in area so that the total surface of the commune is 400 hectares (990 acres). As of 2019, the island has a population of 29.
https://en.wikipedia.org/wiki/Mont-Saint-Michel