Singapore is undertaking a detailed study to map changes to its coastal and marine habitats, encompassing both the mainland coastline and surrounding islands. The research will cover all of Singapore’s offshore islands and reefs, providing a comprehensive assessment of the marine environment. This initiative comes as Singapore considers a proposed merger plan impacting western islands. The mapping exercise aims to understand the existing ecosystem baseline and monitor future alterations. Data collected will be crucial for informed decision-making regarding coastal development and conservation efforts. Ultimately, the study will contribute to preserving Singapore’s valuable marine biodiversity. The project will provide vital information for sustainable management of the nation’s coastal resources.