Over-abundant sea urchins on subtidal reefs

Sea urchins have become over abundant on reefs in northern Port Phillip Bay and Beware Reef Marine Sanctuary, and in seagrass in Nooramunga Marine and Coastal Park. Culling programs have been carried out at each location. Urchins have also been observed in increased numbers at Cape Howe and Point Hicks but data from other marine and coastal areas are limited.

Southern Port Phillip Bay, Beware Reef Marine Sanctuary, Nooramunga Marine and Coastal Park
Urchin densities, level of impact