What is the fastest growing river delta in the world?

The fastest-growing river delta in the world is the Sundarbans delta, located at the confluence of the Ganges, Brahmaputra, and Meghna rivers in Bangladesh and India. This delta is rapidly expanding due to the high sediment load carried by these rivers, coupled with rising sea levels and subsiding land. The region is characterized by its unique mangrove ecosystems and is crucial for biodiversity, but it also faces challenges from climate change and human activity.