The Caribbean Digital Twin prototype (CDTp) is an innovative initiative that aims to improve our understanding of the Caribbean region’s coastal and ocean environment and ultimately inform policy making. The CDTp will be supported by a Data Hackathon in the region, which will bring together experts and stakeholders to analyse and interpret data collected in the region and understand the constraints and opportunity for the development of the prototype. The hackathon will help identify the critical environmental factors, including the state of the ocean, the health of the marine ecosystem and the impact of human actvities on these ecosystems. The results supported by capacity building activities in the region will be used to develop a digital twin prototype that can be used to monitor, model, and manage the use of the region’s coastal and marine ecosystems.