As of my last knowledge update in September 2021, the platypus (Ornithorhynchus anatinus) was classified as "Near Threatened" on the International Union for Conservation of Nature (IUCN) Red List of Threatened Species. This designation indicated that while platypus populations were not yet in the "Endangered" category, they were facing significant threats.
Platypuses are affected by several threats, including habitat destruction, water pollution, climate change, and altered flow regimes in rivers. These factors can have detrimental effects on their populations. Additionally, the secretive nature of platypuses makes it challenging to obtain accurate population data.
Conservation efforts were underway to address these threats and protect platypus populations, including habitat restoration, water quality improvements, and monitoring programs. However, the status of the platypus may have changed since my last update, so I recommend checking with more recent sources or conservation organizations for the most up-to-date information on their conservation status.