UNEP - Australia’s lost shellfish reefs

Australia is leading one of the world’s most ambitious marine restoration efforts through its Shellfish Reef Building Program. While coral reefs often dominate headlines, shellfish reefs—formed by oysters and mussels—are equally vital. These “ecosystem engineers” filter water, boost fish stocks, and protect coastlines. With support from The Nature Conservancy, the Australian Government, and local communities, the program has already restored over 60 hectares of reef across all six southern states, aiming to recover 30% of the country’s lost shellfish reefs by 2030.

Recognized as a UN World Restoration Flagship, this initiative is part of the Decade on Ecosystem Restoration.

So far, the project has filtered over 125 billion liters of seawater, removed 15 tonnes of nutrient pollution, and supported the return of 250 marine species. Beyond biodiversity, it has created more than 425 jobs and engaged over 5,000 people, including Indigenous communities, scientists, fishers, and entrepreneurs. Watch the film to explore how nature-based solutions like these are tackling climate and conservation challenges—one reef at a time.

• DP / Director / Editor: Thomas Cristofoletti

• Photos: Todd Brown

• Archival footage: Jarrod Boord - Manny Katz/Eyrelab - TNC Australia - Dominic McAfee

• Executive producers: Florian Fussstetter and Ann-Kathrin Neureuther

• Series producer: Todd Brown

• Associate Producer: Lucía Gonzales Martinez