The matamata turtle, Chelus fimbriatus, is a species of freshwater turtle with spiky ridged scales. It has very specific physical features compared to other turtles.
The matamata turtle does not move around much and is capable of remaining motionless for hours on end. Hidden away on the muddy bottom of swamps, it is invisible with its shell covered in bumps and algae.
To breathe without coming up to the surface, it stretches out its long neck and pokes out a short snorkel-like snout where its nostrils are located. In murky waters, the two sensory barbels around its mouth enable it to detect its prey.