history of oyster reefs

Historically, extensive native flat oyster reefs thrived in the southern regions of Australia. However, over a century ago, excessive fishing activities brought them to the brink of extinction. Subsequently, the oyster shells that remained were dredged and utilized in construction, depleting the seabed of the essential foundation for new oyster larvae to attach, thrive, and contribute to the ecosystem. The primary objective of this initiative is to revive this depleted substrate, facilitating the settlement of native oysters and reestablishing the vital ecological advantages of this community.

Benefits of oyster reefs

In the past, native oyster reefs were abundant throughout the estuaries and coastal waters of southern Australia, playing several pivotal roles. These reefs offered various advantages, which included:

  1. Serving as vital habitats for a diverse array of temperate coastal marine species, including King George whiting, southern calamari, seadragons, and pipefish. Consequently, they played a crucial role in bolstering both recreational and commercial fish and shellfish populations.

  2. Acting as natural water filters, thereby enhancing water clarity and overall water quality.

  3. Playing a pivotal role in sediment stabilization and providing shoreline protection from the energy of storm surge waves.

learn more about the history of oyster reefs, as well as our restoration project, by listening to the community forum hosted by coffin bay scuba co with dr dom mcafee himself as lead speaker.