Diu is an island, and its identity is entirely shaped by its surrounding waters.
* **The Arabian Sea**: Borders the island to the south, providing the stunning vistas and beaches that drive local tourism. * **Chasi River (Tidal Creek)**: A narrow tidal creek that separates Diu Island from the Kathiawar peninsula of mainland Gujarat to the north. * **Wetlands**: The inland coastal edges feature mangrove patches and wetlands that naturally buffer the island against tidal surges.
