Book excerpt: This topical Research Handbook examines the legal intersections of climate change, oceans and coasts across multiple scales and sectors, covering different geographies and regions. With expert contributions from Europe, Australasia, the Pacific, North America and Asia, it includes insightful chapters on issues ranging across the impacts of climate change on marine and coastal environments. It assesses institutional responses to climate change in ocean and marine governance regimes, adaptation to climate impacts on ocean and coastal systems and communities, and climate change mitigation in marine and coastal environments. Through a plurality of voices, disciplinary and geographical perspectives, this Research Handbook explores cross-cutting themes of institutional complexity, fragmentation, scale and design trade-offs.