sunset in Wagonga Inlet
Dusk approaches Wagonga Inlet © Kirk Dahle

Restoring shellfish reefs

The unique reef restoration of Wagonga Inlet

Shellfish reefs in NSW

‘Narooma’ is the Indigenous Yuin word for 'clear blue waters'. A fitting title for a place overflowing with underwater landscapes. Landscapes like pristine beaches, rocky shores with dense kelp forests, sweeping lakes and the stunning Wagonga Inlet at the heart of it all. 

Countless wildlife also calls Narooma’s idyllic waters home, with the iconic Port Jackson sharks, stingrays and fur seals often spotted.

Like much of Australia, the area was once also the home of extensive shellfish reefs. After years of over exploitation, pollution, introduced species and disease, these shellfish reefs sadly mostly disappeared.

Creating a living shoreline 

In June 2021, TNC partnered with the Eurobodalla Shire Council, NSW Department of Primary Industries (DPI) Fisheries and the Australian Government. Together we plan to restore shellfish reefs in the Wagonga Inlet and create a ‘living shoreline’. 

The ‘living shoreline’ will use a combination of natural elements and ecosystem restoration techniques to prevent erosion and rehabilitate an eroding seawall and degraded section of shoreline in Wagonga Inlet. This is the first restoration of its kind in Australia. 

The project involves transforming a section of the Wagonga Inlet shoreline between the Narooma Swimming Centre and Ken Rose Park. DPI Fisheries is leading the project under the NSW Marine Estate Management Strategy, Eurobodalla Shire Council and TNC are supporting the restoration.

A unique reef

The Wagonga Inlet reef is a truly unique project: it will be the first intertidal oyster reef on the NSW South Coast and the first subtidal oyster reef for the state. It will also be the first ‘living shoreline project’ in the whole of Australia that combines oyster reef and saltmarsh restoration with bank stabilization and public amenity features.  

Construction is expected to kick off in May 2022. First, a 1,700 m2 intertidal Sydney Rock Oyster reef will be built using both locally quarried rock and oyster shells. Intertidal shellfish reefs are inundated on high tide and are exposed, out of the water, during low tide. This elevation range between low and high tide is the natural home for Sydney rock oysters. 

A further 1,000m2 of subtidal native flat oyster reef habitat will then be created on the seafloor of the nearby ‘Deep Hole’. These subtidal shellfish reefs are more than 3 meters deep and remain underwater during all tide stages. 

View a concept of the Wagonga Inlet Living Shorelines

Benefits for people and nature

The return of the shellfish reefs, along with the increase and rehabilitation of the degraded saltmarsh at the Wagonga Inlet’s foreshore has many benefits for the local community and nature. This includes:

  • Improved marine biodiversity, fish production and water quality
  • Enhance access and recreation opportunities
  • A boost to sustainable tourism
  • Improve foreshore protection from erosion
  • Provide the capability of storing carbon

 

Shellfish ecosystem restoration across Australia

Wagonga Inlet is one of thirteen sites identified for reef restoration under Reef Builder, an initiative supported by the Australian Government, which aims to bring shellfish reefs back from the brink of extinction while supporting the economic recovery of communities affected by bushfires and COVID-19.

If achieved, Australia will be the first nation in the world to have recovered a critically endangered marine ecosystem.