Where do platypuses live in Australia and Tasmania?

Platypuses are found in the waterways of all eastern Australian states, inhabiting a diverse range of terrain that spans from the high country of the Australian Alps and Tasmania to lowland areas near the sea.12

Within these regions, they occupy both eastward- and westward-flowing river systems, though they are notably absent from far northern Queensland. Because they rely on an electromechanical system to navigate and hunt for invertebrates on the beds of rivers, streams, and lakes, they must feed in fresh water. While they have occasionally been observed in salt water, their specialized navigation system is only operative in fresh water. During the day, they shelter in burrows dug into the banks of these waterways.12