Platypuses inhabit rivers that can drop near freezing in winter. They maintain body heat through dense fur and a high metabolic rate. Foraging in cold water requires consuming large amounts of food to sustain energy. They can dive repeatedly in icy streams for hours. Burrows provide shelter and reduce heat loss. This adaptation allows them to thrive in environments that would challenge other semi-aquatic mammals. Cold tolerance ensures survival during seasonal temperature fluctuations.
Tolerance to freezing water supports population persistence in harsh climates.
Cold-adapted physiology demonstrates resilience in fluctuating environments.
Platypuses continue foraging even when water temperatures approach freezing.
Australian Museum (australian.museum)