  Page(s) sur les marées
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The spectacle of the tide The speed of the currents often exceeds one metre per second. When the sea comes in, a 25 km wide wave rushes in between the headlands of Cancale and Granville. The bore, about 50 cm high, roars in, but does not move forward at the same speed everywhere. There is therefore a great danger of being encircled if you should adventure out into the Bay alone. To enjoy this sight, you should go to Le Grouin south of Vains, the Pontaubault bridge or to Roche Torin in Courtils, 1 hour and 30 minutes before full tide. The Tidal Phenomenon The mobility of water and the landscapes The bay of Mont-Saint-Michel has the strongest tides in Europe. The tidal range is between 20 and 120 with a difference of more than 14 metres between the highest and lowest tides. The landscape of the Bay changes according to the tides, which ebb and flow over the shore twice daily, leaving behind it large rippled stretches cut by a network of channels. The tide is fascinating to watch. It is so fascinating that many legends have come from it. Victor Hugo compared the speed of the rising tide with that of a galloping horse. |
