Hobart Rivulet Platypus

Is your legacy that you lived and enjoyed nature, or lived and cared for nature? 

Is your legacy that you lived and enjoyed nature, or lived and cared for nature? 

Translating caring into action

“I am only one, but I am one. I cannot do everything, but I can do something. And because I cannot do everything, I will not refuse to do the something that I can do.”
― Edward Everett Hale

Actions we take on behalf of our monotreme friends include:

Monitoring of Hobart Rivulet platypuses

Ongoing monitoring of Hobart’s urban platypus population is central to our mission to protect and conserve. In addition to spending many hours per week monitoring Hobart’s waterways first hand, we also operate Platycam, a network of trail cameras that operate 24/7.

We unapologetically fight for what is left of Hobart’s waterways. All living entities, including waterways have the right to exist and flourish, to be restored, regenerated and respected. Our efforts are guided by the City of Hobart’s own State of our Rivulets report

Behavioural data, images and video gathered through monitoring are grouped by individual animals and entered into our @HRP database.

@hobartrivuletplatypus runs ongoing community engagement and awareness campaigns including:


Central to our community campaigns is the authentic sharing of the Hobart Rivulet platypus’s lives.

Empowering the next generation of nature guardians is critical.

In 2023 we began rolling out the Seize it, Snip it, Bin it! looped litter campaign.

Seize it, Snip it, Bin it! encourages kids to take responsibility for their own rubbish, and action around the problem of looped litter.

In the second half of 2023 we ran sessions in 20 schools, located in Tasmania, mainland Australia and the United States. School sessions are scheduled to restart in Q3, 2024 following the release of our new documentary Becoming Platypus.

With over 1000 hours of experience working in close proximity to platypuses, we have developed techniques to:

  • locate and identify platypuses
  • confirm entanglement prior to capture
  • capture & assess entangled platypuses
  • minimize stress & disturbance to entangled platypuses


Contact [email protected] if you suspect a platypus may be entangled in litter.

Our ongoing monitoring of the Hobart Rivulet means we are often amongst the first to become aware of a pollution event.

Hobart Rivulet pollution events since 2020 include:

  • Rubbish from the the city tip and Hobart’s stormwater system entering the rivulet following heavy rain events
  • Hobart based construction companies washing toxic building materials ‘down the drain’ and into the rivulet.
  • Sewer contaminating the rivulet due to aging infrastructure

All pollution events are documented and reported to the City of Hobart and the EPA.

Works in the Hobart Rivulet are a contentious issue. The period of lowest rainfall when works are often planned, coincides directly with the platypus’s breeding and nesting season. We speak and act on behalf of platypus!

Matters we have been involved with to date include:

  • Reporting and subsequent investigation of damage to a platypus burrow during works in the Hobart Rivulet. Platypus burrows are protected by law, under Tasmania’s Nature Conservation Act.
  • Cessation of bridge works until necessary permits and environmental protection measures were put in place.
  • Timing of the Cascade Gardens Boulder Trap maintenance to minimize disturbance to the platypus breeding season.

@hobartrivuletplatypus has a permit from the City of Hobart to enter the waterway to collect rubbish, including immediately after storm events.

We regularly communicate with platypus scientists including the Australian Platypus Conservancy and  DPIPWE, to ensure the guidelines that relate specifically to platypus behaviour in Southern Tasmania are accurate.

We share significant findings from our monitoring program with the scientific and conservation community.

We continue to vigorously lobby the City of Hobart to:

  • Upgrade McRobies Outfall. The city tip remains the largest source of loose litter pollution in the Hobart Rivulet. The impact of litter on platypus is unacceptable.
  • Recognize the critical role the Cascade Gardens Boulder Trap plays as the largest pond in the Hobart Rivulet and manage it accordingly.

We partner with, and provide resources to, like minded organizations such as World Wildlife Fund and the Australian Conservation Foundation.

We work with local stakeholders to revegetate strategic habitat.

The story of @hobartrivuletplatypus was the basis for The Platypus Guardian documentary, released by ABC Australia and PBS America in 2022.

We are currently working on Becoming Platypus, a short form documentary set to be released into schools Q3, 2024.

Where necessary, we engage media including:

  • Radio spots 
  • TV News
  • Newspapers & magazines


Media coverage to date includes: ABC News, Win News, Channel 7 News, ABC Radio, Australian Geographic, The Mercury, RACT, and Hobart Magazine.

Hobart Rivulet Platypus was founded by Pete Walsh in October 2020.

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