We aim to capture the complexity of the system, embrace the inherent uncertainty of the future and question current unsustainable trajectories, while emphasizing the vastness of future option space. The visions are analyzed using the concept of imaginaries, demonstrating that futuristic stories can be traced back to current realities and the scientific evidence they were based upon. We argue that engaging with alternative futures can open up transformative spaces to rethink the relationships between humans and the high seas, from which novel imaginaries can emerge.