The Three Rivers are a very important oyster farming domain in South Brittany with a production of flat ans shallow oysters thansk to the exceptional quality of their waters. During your walks along sea paths, you will be able to see oyster farming pontoons which are dragged in deep water. At low tide, you will discover parks where pockets full of oysters are brushing against each other and flat ones moored to pontoons. These are typical landscapes in the Three Rivers.
During the high season, the tourist office organizes guided tours of oyster farms. It's required to contact for dates and rates.