User:Nighbemn/sandbox

=Elseya Irwini= The breed of reptile named Elseya Irwin is a rare new species of freshwater turtle which originated from the lower region of the Burdekin River area. Named after "co-discoverer", zoologist and celebrity, Steve Irwin after Steve's father caught this species on a fishing line in the late 90's. These individuals are well known for their sturdy skull which is supported by a narrow muscle called the pterygoid, creating a shielding for the skull and also providing normal jaw function. Unlike most sea creatures this species of turtle not only use their lungs for normal respiratory functions they also use a structure called the cloaca, which allows for a precise gaseous exchange during respiration.

Respiration
This species of turtle uses a form of respiration using their cloaca. The cloaca is a cavity at the end of the digestive tract which allows for the diffusion of oxygen to provide proper respiratory functions. Like most reptiles, Irwin's turtle needs to live in a source of water that is plentiful with oxygen. If the oxygen levels are too low or the water is being filled with contaminates from nearby buildings or farms the turtle has a very low chance of surviving for very long. As seasons changes and temperature drop it may be difficult for certain species to maintain homeostasis and stay alive. When temperature drop the turtles internal temperature drops as well, during this time the need for oxygen is less intense. The oxygen collected from the water flowing around the turtles body is enough to keep them alive until Spring.