City-Sea Symbiosis explores the unique human settlement forms in Zhuhai City and Macau. This book focuses on the diversity of human settlements in the Xiangshan area, covering clan settlements (Tangjiawan ancient town), island settlements (Guishan and Guihai on Guishan Island of Zhuhai City), commercial settlements (Dock, Pátio and Beco, Inner Harbor), and cross-border settlements (Hengqin), among others.   Contributions examine these settlements' historical context, formation, and development, as well as how they interact with the geographical environment and socioeconomic factors. Chapters define the characteristics of different settlement types in terms of architectural style, spatial layout, and cultural inheritance. As a whole, the volume presents readers with the rich, diverse, and unique settlement landscape of Zhuhai and Macau, calling attention to the features and benefits of the city-sea symbiosis that these settlements exemplify.   This volume offers a detailed and comprehensive comparison between the urban morphologies of Zhuhai and Macau, revealing their unique characteristics and mutual influences in a way that a single study cannot achieve. It thus allows readers to gain a holistic understanding of two distinct yet interconnected urban landscapes, making it an essential resource for scholars interested in regional urban studies, architecture, geography, and tourism.