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About Us

Estuary Guardians was established in 2015 by John Tonkin College students and teachers  - working with rescue, research, business and schools, to encourage people to look after Mandurah’s dolphins and marine environment.

The students, in collaboration with Mandurah Dolphin Research Project, Mandurah Volunteer Dolphin Rescue Group, and Mandurah Cruises produced the first Fin Book of dolphins in the Peel-Harvey Estuary in 2016. The Fin Book enables members of the community to identify the local dolphins and contribute to monitoring and research effort by recording dolphin sightings the Dolphin Watch mobile application launched in Mandurah by River Guardians in 2018.


Estuary Guardians has evolved over the past seven years to become a community driven group incorporating the Mandurah Volunteer Dolphin Rescue Group, connecting the public, government and other local environmental groups to not only monitor the dolphins but the whole Peel-Harvey ecosystem.

We thank local environment group Peel Preservation Group Incorporated for their continued sponsorship

The greatest threat to our planet is the belief that someone else will save it.”
- Robert Swan

At Estuary Guardians Mandurah We:

As the Mandurah Volunteer Dolphin Rescue Group we monitor Mandurah’s dolphins, keep records of changes to the population and advise and assist Department of Biodiversity, Conservation & Attractions on any entangled, injured, stranded or deceased dolphins. With such information and incidents we advocate for the protection of our dolphins by local and state government.

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Educate the community about Mandurah’s marine environment, the diverse wildlife that call it home, the threats they face and how we can all do our part to protect them – inspiring more people to become guardians of the ‘Peel-Harvey Estuary’. We do this by offering education sessions for schools, dolphin forums & community group visits for adults and community event stalls.

Work on projects to protect and raise awareness of Mandurah’s marine environment, the diverse wildlife that call it home. Some of the projects we have worked on include fin books, fishing line bins, citizen science – Dolphin Watch App & more. We’re also part of the ‘The Clean Waterways Group’ in Mandurah – a collaborative effort developing new ways to engage the local community in caring for our waterways and wildlife.

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Keep the community connected to Mandurah's dolphins by hosting events - tailored to children or adults - and providing regular social media updates, along with a messenger service that people can share their dolphins sightings on, ask questions and report unusual behaviour, Stranded, Injured or Deceased Dolphins.

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