The last twenty five years multiple management issues concerning the suspended farming of filter feeding bivalves in Greece have emerged from the deficient implementation of different legislation regimes, that, on their own account, have been proven insufficient. Specifically, regarding the planning and management of cultivation areas, multiple alternatives have been proposed through the years, with some still being under consideration. Yet most of them were selected based on purely spatial criteria and none has been thoroughly investigated, regarding the system's carrying capacity. As the current governance structure, in combination with the previous and current legal framework, seems unable to solve the existing problems, a question arises: are the “legal” solutions the optimum –or even among the best-regarding the environmental and socio-economic sustainability of the coastal aquaculture in the areas under consideration? In this paper we attempt a discussion between science and management, regarding the 3 main mussel-farming areas of Thermaikos gulf, Greece: Chalastra, Imathia and Pieria. The tools that were designed in the context of integration between science and policy are used in order to investigate the appropriate structure and flexibility of the legal framework controlling the activity and the governance level in which this control should take place. Previous and ongoing research results from combined management models, implemented or developed, for the mussel-farming areas of Thermaikos gulf are the starting point of this discussion. The goal is to detect “weak spots” of the current legal framework and to investigate if and how scientific management tools can assist in the development of more flexible, yet more effective environmental legislation.