This book highlights how Singapore’s coral reef system is responding to changing environmental conditions caused by urbanization and climate change. It provides a fundamental understanding of how reefs respond to decades of chronic urbanization impacts and episodic marine heatwave events, with studies revealing responses at molecular, cellular, organismal, and community levels. Knowing what drives the persistence of coral-dominated reefs through urbanization and global warming impacts will contribute to the formulation of effective conservation strategies. The chapters cover topics such as the impacts of sedimentation on coral communities, the energetic needs of corals in extreme environments, and the diversity of Symbiodiniaceae dinoflagellates. Readers will discover insights into the resilience of coral reefs, the role of microbiomes, and the thriving coral reef fishes in Singapore’s urban reef system. This literature invites readers to think through critical questions about conservation status and biological connectivity in urbanized seascapes. Contributions from distinguished scholars and practitioners provide expert insights into theoretical frameworks and practical case studies, addressing topics such as the impacts of climate change, the persistence of coral-dominated reefs in the face of substantial losses and bleaching events, and strategies for management and reef restoration initiatives. Researchers, ecologists, and reef managers will find this book invaluable. It offers a comprehensive analysis of Singapore’s coral reefs, making it essential for anyone interested in marine conservation, urban ecology, and sustainable development. This volume is a crucial resource for understanding and managing coral reef resilience in the face of urbanization and climate change. Scholars, students, and practitioners in marine biology, environmental science, and urban planning will benefit from the insights and strategies presented. As governments seek to fulfil obligations to COP and UN Sustainable Development Goal 14, this book provides the scientific foundation needed to guide effective conservation measures in tropical coastal cities.