The coast of Santa Catarina represents 7% of the Brazilian coast and contains 6 areas relevant to conservation. Currently, we do not know the occurrence, distribution and abundance of microplastics in most of the beaches of this coast. The project aims to train a network of citizen scientists for unified microplastic monitoring, collecting different types in an area of 25 meters over 3 months and analyzing this information, creating a baseline for regulating plastic use in conservation areas.