Agatti is a narrow strip of land entirely surrounded by the **Laccadive Sea** (part of the Arabian Sea).
* **The Western Lagoon:** A massive, shallow, and brilliantly turquoise body of water protected by the outer reef. It is the defining geographical feature of the island. * **Freshwater:** There are no rivers, natural lakes, or streams on Agatti. The island's freshwater comes from a fragile underground freshwater lens accessed via wells, supplemented by rainwater harvesting and government-run desalination plants.
