Black Rock is a small rocky island in the southern part of Batemans Bay, and it has more features per square metre than almost anywhere else in the area. The eastern and southern ends drop dramatically to about 15 m, while the northern and western sides are less vertical. Sand gutters, ridges, vertical walls rising to the surface, sandy bowls, swim-throughs and caves are all packed around the rock, and a drift dive is the best way to see several of them in one go.

McFadyen describes the route: drop in off the northern side, go over a ridge onto the sand gutter at about 19 m and follow the wall south and then south-east. Then turn right, head west back onto the main wall and continue south until the wall turns west over a sandy bottom. The dive passes under The Arch at about 15 m and finishes by following the wall on the left to a long, low cave running back under Black Rock. Along the way expect blue groper, wobbegongs, Port Jackson sharks and eastern blue devilfish, with yellow zoanthids, sponges, gorgonians and sea squirts on the walls. The Marine Life Network describes Black Rock as a 20–25 m boat dive with the Arch, a bubble cave with an air pocket, small caves and sponge gardens.

The drift suits Advanced divers who can manage buoyancy near walls and caves and deploy an SMB. Without current, the same features can be dived as separate sites from an anchor: The Arch, the Bubble Cave, The Tunnel and The Chimney. McFadyen notes that the cave sections silt easily and wobbegongs may be lying just inside.

Boat access only. Black Rock lies just off Lilli Pilli on the southern shore of Batemans Bay; the nearest ramp is at Mosquito Bay (Lilli Pilli), a couple of minutes' run, and Beneath the Bay brings divers from the Hanging Rock ramp in Batemans Bay in about 15 minutes. For the drift, the boat drops divers off the northern side of Black Rock and follows their bubbles or SMB south, collecting them after the dive near The Arch or the southern end.

Depends on current, which McFadyen found running from the north on a Christmas–New Year visit. Black Rock is sheltered from southerly swell, but easterly and north-easterly swell makes the shallower sections and caves surge. The dive needs a live boat and flat enough seas to follow divers.

Visibility falls after heavy rain.

Drop in off the northern side, go over a ridge onto the sand gutter at about 19 m, then follow the wall south and south-east. Turn west along the main wall, continue south as it turns west to the sandy bottom and pass under The Arch at 15 m. Follow the wall on your left to the long, low cave under Black Rock, then surface on an SMB for pick-up.

Run as a drift when a current is flowing by Batemans Bay operators (Beneath the Bay). McFadyen dived it with the former Malua Bay Dive, now closed.