Wonders like this are the heart of environmental journalist Ben Raines’ book Saving America’s Amazon: The Threat to Our Nation’s Most Biodiverse River System. The Mobile River Basin, that is, a branching network of rivers and creeks that drains part of four neighboring states and most of Alabama into Mobile Bay. More than a third of all known freshwater fish species in the U.S., Canada, and Mexico call Alabama home. Saving America’s Amazon is Raines’ devotion to these riches and an earnest call to arms. I grew up in a small town on the eastern shore of Mobile Bay.