Populations of the long-spined sea urchin have exploded in recent years on the Australian east coast. The urchin barrens that form as a result of this pose a threat to native biodiversity and undermine profitable harvesting of C.rodgersii as a commercial species. OceanWatch has partnered with the NSW Abalone Association to manage urchin numbers and enhance the reef where these barrens have formed. The project also includes the development of and training in the Environmental Code of Practice for the Abalone, and Sea Urchin and Turban Shell (SUTS) fisheries.
Divers from the Abalone and SUTS fisheries are working to reduce the density of urchins at four urchin barrens (8 ha) in NSW until mid-2021. This can aid in enhancing seaweed habitats, thereby improving biodiversity, and can also improve remaining urchin roe quality as well as increasing the abundance of quality abalone.