9. Mississippi River Delta, U.S.

Mississippi River Delta, U.S. [huanqiu.com]

Insurgent Mississippi River flows from north to south through the vast subtropical landscape of rivers, marshes, and low-lying barrier islands, finally into Mexico Bay. At the rim of Mississippi River Delta, the Chandeleur Islands form a natural buffer zone for the heavily populated coastal regions of Louisiana, which include New Orleans, against increasingly stormy seas.