Global Fishing Watch (GFW) is an international nonprofit organization focused on enhancing ocean governance through increased transparency of human activity at sea. Established in 2015, GFW leverages advanced technology, including satellite data and machine learning, to create publicly shared visualizations, data tools, and analytical resources designed to improve how oceans are managed. The organization's mission is to ensure that human activities occurring in ocean spaces are accessible and understandable to everyone, enabling informed decisions that promote sustainable and equitable use of marine resources. GFW targets the widespread issues surrounding commercial fishing, with the goal of mapping and visualizing all significant ocean activities by 2030, thereby fostering accountability and informed governance for the global ocean commons. Through collaboration with various stakeholders and extensive data-sharing initiatives, GFW seeks to empower policymakers and scientists alike to combat illegal and unsustainable practices in marine environments.