“…Marta and the Magdalena River, bringing suspended solids and different pollutants [9] The identifi cation of the mostly negative impacts caused on the lagoon system of the CGSM by the presence of MPs allows us to rethink the activities that infl uence it and is born as a starting point to establish a set of corrective actions or management guidelines, seeking a resilient, sustainable, and interconnected ecosystem [10]. The proposal of corrective actions is focused on the reduction and regulation of the emitting sources of plastic and microplastic, given that in the region different economic activities are developed, which imply the direct and indirect use of plastic, this is present in fi shing activities, agricultural production such as bananas, in commerce, tourism, or simply in the daily behavior of the population that inhabits the cienaga and its surroundings, and on the other hand, alternatives should be promoted to substitute the use of plastic for materials with less impact on the environment [11], hand in hand is the participation of communities and entities responsible for reducing waste production, and for example, the implementation of cleaner productions where the sustainable development of the CGSM would be guaranteed [12,13].…”