The Marennes-Oléron oyster beds are renowned for their oyster production. The oysters are bred in beds 5 km out at sea, then matured in shallow ponds called claires. The blue navicula, a small algae present in these ponds, is the reason for the green colour of the Claire oyster, well known by the gastronome. The great quality of the Marennes-Oléron oysters is linked to the mixture of the fresh and salt water, as well as to the maturing in claires. Bon appétit!
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