In the 1970s, shellfish farming in Normandy developed in four ‘crûs’or sites that meet these requirements: West-Cotentin (around Agon-Coutainville), East-Cotentin (around Saint-Vaast-la-Hougue), Isigny-sur-Mer (around Utah Beach) and Côte de Nacre (around Arromanches).
Ar an tslí sin, sna 1970í, forbraíodh tógáil sliogéisc na Normainne i gceithre ‘crûs’, a chomhlíon na riachtanais seo: Iarthar an Cotentin (thart arAgon-Coutainville), Oirthear an Cotentin (thart ar Saint-Vaast-la-Hougue), Isigny-sur-Mer (thart ar Thrá Utah) agus Cósta Nacre (thart ar Arromanches).