These turtles can remain submerged for 6-8 hours before coming up for air.
They can remain so still underwater that algae will cover their backs making them almost invisible to fish.
These turtles use chemosensory signals to locate their prey. Water flowing in and out of the mouth provides chemical cues emitted by nearby potential prey. Using this sensory system, alligator snapping turtles can locate prey such as mud turtles that have buried themselves in the mud at the bottom of the river.