Guayas River Estuary
Guayaquil, Ecuador, sits on the upper stretches of the Guayas River estuary, adjacent to a 235-square-mile (608-sq.-km) network of tributaries and mangrove forests. Since the 1970s, commercial shrimp farms have become commonplace in the estuary, leading to mangrove deforestation. This presents a conflict for Guayaquil, which benefits from shrimp exporting but is the planet’s fourth-most vulnerable city to future flooding due to climate change.
-2.208180°, -79.942960°