Cycling from Bordeaux Vineyards to the Atlantic Coast/ Cap Ferret/ Bassin d’Arcachon

another oyster farm in the Arcachon basin
The Arcachon basin measures 200 square kilometres, the basin is almost separated from the Atlantic by the Cap Ferret peninsula, so at high tide the water can flow into the bay between Cap Ferret and Arcachon and at low tide back into the Atlantic, ensuring the daily exchange of water in the bay for oyster farming.