Meet the giant snake-necked turtle - the largest of the long-necked turtles found in Australia. Turtles like this one @tennesseeaquarium play an important role in river ecosystems, especially after a fish kill event. They will feed on dead fish, returning ammonia and dissolved oxygen back into the river in just 3-6 days versus natural decomposition which can take nearly one month! #PhotoArk @insidenatgeo