Home / Programs / Shellfish Revolution

An important part of our marine ecosystem is shellfish reefs, they not only provide benefits for humans but for our fishy friends. 

Shellfish Revolution Projects

 Reef Ball Rejuvenation Project 

 Reef Ball Rejuvenation Project 

Community members will create ecosystems by deploying shell over reef balls. Anglers and volunteers will drop bagged shell from boats over the concrete reef balls from late 2024 to late 2026. Fish species will be monitored during this time using BRUVs.

Read More
North Pine River Shellfish Research

North Pine River Shellfish Research

Groundbreaking Research headed by OzFish will uncover if oyster reef restoration can provide a nature-based solution to the problem of nitrogen in Australia’s waterways, A pioneering trial at the North Pine River, north of Brisbane is now underway to see if oyster reefs could be the answer to ...

Read More
Maroochy River and Caboolture River, QLD 2023

Maroochy River and Caboolture River, QLD 2023

Through the Caboolture and Maroochy community’s combined actions, native fish habitat continues to be protected and restored within Queensland. Restoration included improvements of in-stream habitat, saltmarsh monitoring a unique shellfish reef trial and and riparian and wetland ...

Read More
Moreton Bay Shellfish Reef Restoration – Queensland

Moreton Bay Shellfish Reef Restoration – Queensland

The Central Moreton Bay OzFish Chapter has an ambitious goal to restore 100 hectares of shellfish reef in Moreton Bay over the next 10 years and beyond, stretching many hundreds of hectares. This kind of restoration will do more than simply improve water quality in the bay, it will rejuvenate ...

Read More
Port Phillip Bay Community Reef Restoration

Port Phillip Bay Community Reef Restoration

Building on the fantastic large-scale shellfish restoration efforts already underway in Port Phillip, this project will focus on a smaller-scale, community-driven approach, with fishers rolling up their sleeves and helping to deploy reef substrate, monitor restoration progress and highlight rec ...

Read More
Corio Community Reef Restoration

Corio Community Reef Restoration

Building on the fantastic large-scale shellfish restoration efforts already underway in Port Phillip, this project will focus on a smaller-scale, community-driven approach, with fishers rolling up their sleeves and helping to deploy reef substrate, monitor restoration progress and highlight rec ...

Read More
Shellsavers, Flinders VIC

Shellsavers, Flinders VIC

Mornington Peninsula locals are diverting oyster shells from landfill to create new reefs in Port Phillip and Westernport Bays. The Shell recycling site has been established at the Flinders hopper where the recycled shell is ready to be collected and undergo biosecurity protocols to be ...

Read More
Port River Shellfish Restoration, Adelaide – SA

Port River Shellfish Restoration, Adelaide – SA

OzFish volunteers and members of the local community set out to take steps to begin the return of thriving shellfish reefs to the Port River estuary. This built on previous successful trials by the Estuary Care Foundation to return native flat oysters to the waterway. 

Read More
Fish Castles, Gippsland Lakes VIC

Fish Castles, Gippsland Lakes VIC

OzFish is encouraging local people to become citizen scientists and help monitor a new oyster reef in Narooma, on the south coast of NSW. By volunteering, people will be playing an important role in restoring a healthy aquatic habitat to the state’s coastline.

Read More
Wagonga Inlet Oyster Reef Restoration, NSW

Wagonga Inlet Oyster Reef Restoration, NSW

OzFish is encouraging local people to become citizen scientists and help monitor a new oyster reef in Narooma, on the south coast of NSW. By volunteering, people will be playing an important role in restoring a healthy aquatic habitat to the state’s coastline.

Read More
Black pygmy mussel restoration, Swan Canning Estuary – Perth

Black pygmy mussel restoration, Swan Canning Estuary – Perth

The Swan-Canning black bream population are set to get a boost, with a new project set to increase numbers of one of their favourite food sources: the black pygmy mussel. Black pygmy mussels are a crucial food source for bream and when their diet is rich in this specific shellfish it leads to ...

Read More
Richmond Rock Oysters

Richmond Rock Oysters

OzFish Richmond River Chapter is investigating a new variation of Sydney Rock Oyster, which may turn out to be the disease-resistant oyster everyone in the commercial industry has been looking for.

Read More

Shellfish reefs are endangered in the marine ecosystem

An important part of our marine ecosystem is shellfish reefs, sadly, they are critically endangered, with 99% of shellfish reefs functionally extinct within Australia. Shellfish reefs are declining due to sediment runoff and human impacts such as pollution, overharvesting and reef dredging for shells. This not only reduces shellfish numbers but also takes away the hard substrate they need to re-establish naturally. Basically, they can’t multiply if they have nowhere to anchor.  

It’s not all bad news though, with mammoth efforts being undertaken by conservation groups, businesses, communities, and everyday Aussies to restore our reefs to their former glory. It is an ongoing project that will take many years to accomplish, but so far, the results are promising.  

What are shellfish reefs?

Shellfish reefs are living vertical structures, found in bays, estuaries, and nearshore coastal waters. These complex structures are made up of millions of shellfish, including mussels, oysters, pipis, and cockles. They form a hard substrate by clustering together and attaching to older shells, rocks, piers, or any rigid, submerged surface. 

Fish and other aquatic life rely on shellfish reefs for habitat, providing places where they can shelter, breed, and source food. They are also a natural filter, improving water clarity and promoting the growth of seagrass. These benefits create better fishing, with every hectare of living shellfish reef able to produce an additional 2.5 tonnes of harvestable fish per year.  

Shellfish restoration efforts

The restoration efforts take advantage of oysters’ natural tendency to grow together in clumps. One method involves collecting recycled oyster shells, and after a period of sanitation, placing them in degradable mesh baskets that are deployed in the water.

This creates a natural hard surface for baby oysters to attach, with one shell housing up to 10 baby oysters, now that’s a lot of mouths to feed! 

Taking action to restore these reefs will help to reinstate a traditional food source, improve water quality, and increase fish numbers. This leads to better, stronger, and healthier fish populations. 

What can OzFishers do?

The following are some ways OzFish and its volunteers are positively contributing to shellfish reef restoration 

  • Establishment of the Moreton Bay Shellfish Recycling Centre 
  • Working bees to help sanitise and build ROBs 
  • Deploying of ROBs 
  • Monitoring and reporting restoration progress 
  • Deploying reef substrate 
  • Quantifying organisms and aquatic life found in ROBs  
  • Purchasing and running an oyster lease to grow baby oysters 
  • Collaboration between communities, businesses, and volunteers 
  • Running engagement and education events 
  • Constructing artificial habitats
  • Installing mussel mats 
  • Installing custom-made habitats under jetties 
  • Working with local oyster growers to understand the local shellfish population 
  • Helping to research the QX disease 

shellfish revoluation

Volunteer with Us

Join our community of volunteers who share our determination to restore Shellfish Reefs across Australia.

Sign Up

Make a Donation

Donate today to support our mission to restore oyster reefs through community-driven participation and ownership.

Donate Now

Become a Member

Help us raise funds for our restoration initiatives by becoming an OzFish member today. Learn more about member benefits!

Join Today

Our shellfish reefs require ongoing maintenance, so both the fish that call them home and the communities that enjoy them can thrive. You can be part of giving back by making a donation to the Shellfish Revolution Project today.

Donate Today

The Shellfish Revolution Project provides a portable habitat restoration hub, that makes it possible to regenerate as much of a waterway’s catchment area as possible, not just those areas where humans congregate.

The ongoing success of the Shellfish Revolution Project will rely on the continuing engagement of local stakeholders to ensure the region’s individuals, groups and organisations can take ownership of the health of their shellfish reefs.