This video EC(h)OTONES co-creation: bridging natural and built environment in the North Coast of Java, Indonesia (ECoast) developed at the Department of Urban and Regional Planning, Diponegoro University, is a reflective learning tool that helps viewers better understand the socio-ecological transitions unfolding within the area. Building upon the concept of EC(h)OTONING, which extends the use of ecotones as a lens for identifying wicked urban problems (WUP), it explores the dynamic transformations occurring at the land–sea interface and invites viewers to reflect on the interconnected relationships between natural and built environments, and the challenges of living within these rapidly changing coastal landscapes.