The aim of this paper is to analyse plastic marine pollution, alternative solutions, the role of relevant actors and the effectiveness of these actions in resolving ocean pollution. First, the paper breaks down plastic marine pollution into its main causes, actors, and effects. It highlights how human activity is pushing the world’s oceans to the brink of collapse. After this brief introduction aimed to better understand the possible actions against this problematic, the study provides an overview on international legislation and multilateral initiatives that have been proposed all over the years to fight against the plastic pollution crisis. Finally, it examines the effective role of the various innovations that are trying to resolve the problem of plastic pollution affecting the marine environment. The data for this study were obtained through research on academic texts and official websites. This topic is analysed in an objective way and by reporting considerations of different academic authors.