| Gahirmatha Marine Sanctuary | |
|---|---|
IUCN category IV (habitat/species management area) | |
| |
| Location | Odisha, India |
| Nearest city | Chandbali |
| Coordinates | 20°34′N86°50′E / 20.57°N 86.84°E |
| Area | 1,435 km2 (554 sq mi) |
| Established | 1997 |
Gahirmatha Marine Sanctuary is a marine wildlife sanctuary in the Indian state of Odisha, extending from the Dhamra River mouth in the north to Brahmani river mouth in the south. [1] It is the world's largest and most important nesting beach for olive ridley sea turtles. [2]