**Abstract**

Sea and coastal areas are locations that have enormous potential that can contribute greatly to the national economic growth. The potential of marine and coastal areas includes the potential of fisheries. Fish life in shallow water or estuary is relevant to the existence of seagrass beds as their habitat. Seagrass in coastal waters is one of the attractions of fish for reproduction (spawning ground), fish growth place (nursery ground) and feeding ground. Good management requires a well-structured plan that takes into account geographical conditions and the sustainability of the plan in the future for the role of marine spatial planning. Marine spatial planning is a spatial guidance to manage well coastal and ocean areas with more integration and sustainability through identifying and mapping all marine issues. One method of mapping issues in marine spatial planning is open spatial data. The coherence and synergy of spatial planning can be achieved through dialogue between the elites and the public. A solution to bridge political communication between the elite and the public is open spatial data. In this context, the technicalities of open spatial data are important factors for achieving consensus. Relevant non-technical issues, such as data management, human resources and leadership factors are critical points for this potential open spatial data.

**Keywords:** seagrass, fishing areas, coastal conflicts, marine spatial planning, open spatial data
