Giant Crayfish Discovered in Tennessee

The discovery of a new species of giant crayfish under a rock in Tennessee's Shoal Creek, which has been studied for 50 years, just goes to show that you don't have to travel to exotic rivers and wetlands in Asia and Africa to find species that are new to science. The southeastern United States is, in fact, a hotbed of aquatic species diversity, with small populations of unique species living among the hundreds, if not thousands, of springs, rapids, pools, rivers, and wetlands that carve through and pockmark the region, especially in the southern Appalachian Mountains. The Southeast is home to the largest array of freshwater mussels on Earth; an abundance of freshwater snails, crayfish, and turtles; and nearly 700 of the approximately 1,000 species and subspecies of U.S. freshwater fish. Photo Credit: Carl Williams