Southern Arch

Southern Arch is a steep offshore arch in the Poor Knights Marine Reserve, with vertical walls that rise to a shallow northern end and drop much deeper to the south. The site sits in clear subtropical water where strong current can sweep schools of fish along the walls, while sponge gardens, gorgonians, and invertebrates cover the rock. It suits confident divers who want an exposed arch profile and reserve-scale marine life rather than a sheltered lagoon dive.