This article shows how quality-based policies can support the effective implementation of Integrated Coastal Zone Management. It is based upon the analysis of the trial that is currently being conducted by the Marennes Oléron District on the Atlantic coast of France through the implementation of the Oléron Coastal Quality Action Plan. The author emphasizes three main aspects. At first, she exposes the general process that supported the emergence of the ICZM project of this district, highlighting the major role of early public participation, territorial planning and the design of operational action plans. She demon- strates that the implementation of coastal quality action plans can follow the integration building process of the ICZM iterative cycle, and thus support ICZM implementation. Then, she highlights the major role of science/management integration in the implementation of quality-based policies, showing in which way scientists can provide useful knowledge to practitioners at various stages of the decision-making process and contribute both to the development of public participation and success of these policies. At last, the author presents and discusses the lessons learnt from the follow up and analysis of the implementation of this action plan. She emphasizes its strengths and weaknesses by putting it into the perspective of other French ICZM projects, and shows in which way the resolution of the problems faced by stake- holders in it realization contributes to the strengthening of their management capacity. The main benefits of this process for a quality-based policy are outlined.