This book examines the Southern Indian Ocean corridor as a geographic, geological, and atmospheric space, taking a critical oceanic humanities approach while never losing sight of the land and water interface.Using a range of disciplinary approaches and materials, Gupta and de Araujo hydrate territorial and land-based imaginations of the Southern African region by conceptualizing its oceanicity as a fluid and more than human materiality, synthetic situation, and geopolitical nexus. With a diverse set of case studies, they explore a variety of conceptual framings and methodologies, including science-technology-society studies, tourism and heritage studies, history, and international relations (IRs) – among others. The contributors cover a complex and vast imaginative geography, cross-cutting Portuguese, German, and British colonial traces in the region, and exploring land, water, and submerged spaces, from coastal towns and bridges to islands and archipelagos.A fresh approach to thinking about Atlantic and Indian Ocean coastlines in a relational and scalar manner for scholars across a range of disciplines focussed on Southern Africa.