Effective management of bioshields requires a long-term, adaptive approach that accounts for ecological complexity, socio-economic pressures, and climate uncertainty. This chapter examines the major challenges associated with maintaining bioshield functionality and sustainability over time, focusing on governance gaps, ecological degradation, institutional fragmentation, and competing land-use priorities. It highlights how inadequate monitoring, poor stakeholder coordination, and short-term project planning often undermine the long-term resilience of coastal protection systems. The discussion integrates ecological perspectives—such as species turnover, sediment dynamics, and habitat connectivity—with socio-political dimensions, including policy enforcement, financing mechanisms, and community participation. Particular attention is given to the drivers of bioshield decline, including pollution, coastal development, aquaculture expansion, and unsustainable resource extraction. The chapter underscores the need for adaptive management frameworks that incorporate continuous learning, scientific feedback, and stakeholder engagement. It also explores financial sustainability models, such as payment for ecosystem services (PES) and blue carbon initiatives, that can incentivize long-term bioshield conservation. Drawing from regional experiences in Asia and other vulnerable coastal regions, this chapter synthesizes practical recommendations for integrating bioshield management into broader coastal zone management and climate adaptation policies. Ultimately, it emphasizes that ensuring bioshield longevity depends on harmonizing ecological integrity, institutional support, and community stewardship under a unified sustainability vision.