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The world's coastlines are currently experiencing unprecedented pressures arising from both natural processes and anthropogenic activities. Accelerated population growth, urban expansion, industrial development, and climate change are profoundly altering coastal systems, thereby increasing the exposure and vulnerability of coastal communities and ecosystems. Sea-level rise, intensifying storm events, and enhanced coastal erosion are progressively undermining the effectiveness of conventional protection measures, underscoring the urgent necessity for innovative, adaptive, and sustainable management strategies.

Bioshields-comprising vegetated coastal ecosystems such as mangroves, salt marshes, seagrass meadows, and coastal dunes-represent a viable and nature-based alternative. These ecosystems function as living infrastructure, attenuating coastal hazards while simultaneously delivering critical ecosystem services, supporting biodiversity, and sustaining local livelihoods. Notwithstanding a growing body of empirical evidence demonstrating their protective efficacy, bioshields continue to be comparatively undervalued within mainstream coastal management frameworks, which have traditionally prioritized engineered interventions.

This volume seeks to integrate perspectives from ecological science, coastal engineering, policy studies, and community-based management through a comprehensive and evidence-based evaluation of bioshields as instruments for coastal protection, with particular emphasis on the Asian context. It critically examines their ecological underpinnings, biophysical mechanisms, design and restoration principles, socio-economic implications, and governance structures, drawing upon global case studies and applied experiences. Designed for researchers, policymakers, planners, engineers, and practitioners, the book advances interdisciplinary and integrated approaches that are scientifically rigorous, socially equitable, and environmentally resilient.