Platypuses primarily inhabit freshwater rivers and lakes but can tolerate slightly brackish conditions. This adaptability allows them to occupy estuarine regions near river mouths. They can maintain osmotic balance using specialized kidneys and salt excretion mechanisms. It expands their feeding range and reduces competition. Flexibility helps populations persist despite environmental changes. Juveniles may initially prefer freshwater before exploring brackish areas. It demonstrates physiological versatility rare among small semi-aquatic mammals.
Habitat flexibility increases survival in variable environments.
It allows exploitation of diverse river systems and estuaries.
Platypuses can live in freshwater and slightly salty estuarine waters.
National Geographic (nationalgeographic.com)