The platypus is common in waterways of eastern Au.... system navig

The senses of sight, smell, and hearing are essentially shut down while the platypus is submerged to feed, but it possesses a unique electromechanical system of and touch receptors that allow it to navigate perfectly under water. Although it has on occasion been seen swimming in salt water, the platypus must feed in fresh water, where its electrical navigation system is operative. Studies have shown that they can maintain a constant body temperature even after extended periods in water with temperatures as low as 4 C (39 F), a fact that puts to rest the belief that monotremes cannot regulate their body temperature. system navig