Mammal profile

Platypus

Ornithorhynchus anatinus

The platypus is a semiaquatic egg-laying mammal found in freshwater systems. It forages underwater for small animals and rests in burrows dug into banks above the waterline.

Platypus in its natural environment
Photo: Charles J. Sharp. CC BY-SA 4.0.
HabitatRivers, streams, lakes, and connected banks
DietCarnivore
RangeEastern Australia and Tasmania
Signature traitelectroreceptive swimmer

Adaptations

A sensitive bill detects touch and electrical activity, webbed front feet provide propulsion, and dense fur traps insulation. The broad tail stores fat and assists with movement, while males carry venomous ankle spurs.

Behavior and daily life

Platypuses are generally solitary foragers and are most active from dusk through night. They sweep the bill through sediment, store prey in cheek pouches, and chew food after returning to the surface.

Conservation

Current profile labelNear Threatened

Flow changes, bank damage, drought, fire, water pollution, fishing gear, and barriers can reduce habitat quality or connectivity. Healthy riparian vegetation and functioning freshwater systems support platypus populations.

A platypus closes its eyes, ears, and nostrils underwater and detects prey partly through electrical signals sensed by its bill.

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