The significance of barrier islands for coastal protection stems from their role in buffering shorelines against storms, erosion, and rising sea levels. These islands absorb wave energy, reducing the impact of storm surges on inland areas and providing critical habitat for diverse flora and fauna. They support valuable ecosystems, including salt marshes and dunes, which further stabilize shorelines. Protecting barrier islands is crucial for preserving their natural defenses and maintaining biodiversity, especially in the context of climate change that threatens coastal environments globally.