Drones Revolutionize Dugong Research in Pilbara Waters
In the remote waters off Western Australia’s Pilbara coast, a shift in marine research methodology is delivering both cost savings and richer ecological data. Dugongs, the elusive marine mammals dependent on seagrass meadows, are now being monitored using small multi-rotor drones rather than manned aircraft. This transition is the result of a collaboration between Murdoch University’s Harry Butler Institute, Edith Cowan University, the CSIRO, and government departments, with support from international researchers.
Over a two-year period, researchers conducted 240 drone flights, each covering nearly 12 square kilometres per day. These missions recorded 149 dugong sightings while simultaneously capturing detailed imagery of seagrass habitats. The aerial surveys followed pre-established grids over study areas in Exmouth Gulf and the Dampier Archipelago, enabling systematic data collection. By flying up and down grid cells, the drones gathered consistent, high-resolution visual records of both the animals and their food sources.
Dr Amanda Hodgson, a lead researcher from Murdoch University, emphasized the accessibility of the approach: “The great thing is that this sort of technique is available to be used by people who don’t have huge amounts of funding and it also is possible to do the surveys repeatedly, because it very cheap compared to hiring a manned plane.” The cost difference is significant. Traditional fixed-wing aerial surveys could run into tens or even hundreds of thousands of dollars, limiting frequency and scope. With drones, repeated flights at different times of day, tidal conditions, and seasons become feasible, yielding a far more granular understanding of dugong distribution and behavior.
Dr Hodgson further noted, “It actually allows us to get fine scale information about where the dugongs are.” This capability is critical for conservation, as dugongs are highly dependent on healthy seagrass meadows, which themselves are sensitive to environmental changes. Frequent monitoring enables scientists to detect shifts in habitat quality or usage patterns before they escalate into larger ecological problems.
The project’s technical execution reflects advances in drone hardware and operational planning. Multi-rotor platforms, selected for their stability and precise maneuverability, were deployed over marine grids to ensure comprehensive coverage. The drones’ onboard imaging systems captured data suitable for both species identification and habitat assessment. This dual-purpose data stream reduces the need for separate survey missions, optimizing time and resources.
Beyond immediate research gains, the methodology has broader implications. By lowering the barrier to entry for aerial marine surveys, it opens opportunities for smaller institutions or community-based conservation groups to conduct scientifically robust monitoring. Scientists involved in the project believe these techniques can be replicated globally, enabling local teams to collect frequent, high-quality data on dugongs and similar species. Such democratization of survey capability aligns with wider trends in unmanned systems, where portability, automation, and affordability are expanding applications across disciplines.
In addition to ecological insights, the drone-based approach supports operational safety. Manned aerial surveys over open water carry inherent risks, including weather hazards and mechanical failures. Unmanned platforms mitigate these risks while still delivering the necessary vantage point for observation. Furthermore, drones can be rapidly deployed in response to specific events, such as suspected habitat degradation or unusual animal movements, without the logistical lead time of crewed aircraft.
The data collected is being integrated into ongoing conservation efforts by the Department of Biodiversity Conservation and Attractions, as well as Edith Cowan University’s seagrass research teams. By extending existing datasets, these institutions can refine management strategies for critical habitats. The fusion of drone-derived imagery with other environmental metrics—such as water quality measurements and tidal flow models—promises a more holistic understanding of the ecosystems sustaining dugong populations.
This work underscores how aerospace-derived technologies, when adapted for marine biology, can transform field research. Precision flight control, high-resolution imaging, and efficient mission planning are hallmarks of modern drone systems, and their application here illustrates the versatility of unmanned platforms. For engineers and technologists, the Pilbara dugong surveys offer a case study in cross-disciplinary innovation, where tools developed for one domain catalyze breakthroughs in another.
