A European 'Supertide'

Part of France's North Atlantic coast and southwestern England braced for their first giant tide of the millennium on Saturday as the alignment of the sun and the moon created an ocean surge not seen since the 1990s. This so-called "supertide" or "tide of the century," with surges up to 14 meters high, actually happens every 18 years. The high tides have turned France's famed Mont Saint-Michel into an island, and sent bore tide waves into England's River Severn, and the extreme low tides have exposed areas of beach and rock unseen since 1997.

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