The Burrunan dolphin (Tursiops australis) is critically endangered, with fewer than 300 individuals left. Found only in Port Phillip Bay and Gippsland Lakes, Victoria, Australia, these dolphins face serious threats from noise pollution, vessel traffic, and environmental changes. Without urgent conservation efforts, their extinction is imminent.

The Marine Mammals Foundation (MMF) leads the charge to protect the Burrunan dolphin. By using passive acoustic monitoring (PAM) and visual observation, MMF gains a clearer understanding of the dolphins’ behaviour and habitat use. Over the past four years, MMF has gathered extensive acoustic data using nine recorders. By tracking and studying the dolphins’ sounds, MMF uncovers critical insights into how they interact with their environment. This research is crucial in shaping effective conservation strategies.

The Problem

MMF has collected a massive amount of acoustic data, but processing it manually is impossible. The nine PAM recorders generate vast datasets, and without automated tools, it could take up to four years to analyse everything. This delay severely hinders MMF’s ability to propose timely conservation measures to regulators.

The Solution

MMF’s mission is to produce real conservation outcomes through applied research. To study the endangered Burrunan dolphins, they use science-based tools to assess both the dolphins’ vocal repertoire and the wider marine soundscape. PAM continuously monitors the underwater environment, capturing crucial data on these marine mammals. MMF deploys SoundTrap autonomous recorders across strategic sites in Port Phillip. Then, in collaboration with Deep Voice, they use machine-learning algorithms to process the huge acoustic datasets. For the first time, researchers can now track the dolphins’ movements 24/7, gaining deeper insights into their patterns and identifying key biological areas.  

Impact

Thanks to this partnership, MMF will be able to present a comprehensive conservation plan to regulators within the next year, rather than waiting four years. With Deep Voice’s technology, MMF can accelerate their research and better understand the dolphins’ critical habitats and behaviours. This will provide the data needed to influence state and national conservation policies. These efforts may lead to Marine Protected Areas and stronger protective measures, giving the Burrunan dolphin a real chance for survival.