White Rock is the second of the two northern Phillip Island sites named by the Marine Life Network, with Hard Belly Stone.

Phillip Island is the larger of Norfolk's two offshore islands, about 6 km south of the main island. It was stripped of vegetation by introduced pigs, goats and rabbits in the 19th and 20th centuries and is now a national park under restoration, with red, purple and ochre soils exposed on its slopes. Its waters are within the Norfolk Marine Park's Special Purpose Zone around the island group.

The name White Rock suggests a pale rock or seabird-whitened stack visible from the surface, which would make it a natural landmark for fishers and divers. The northern side of Phillip Island faces Norfolk and may give some shelter in the prevailing south-east winds, though the whole island is exposed to ocean swell and current. Marine life recorded around Norfolk in general includes kingfish, trevally, groper, morwong, rock cod, moray eels, turtles and Galapagos sharks, with plate and soft corals, sponges and black coral trees on the reefs.

Ask Norfolk Island Diving whether White Rock is offered and what the profile is. Treat it as an advanced, exposed dive until confirmed. The run is about 20 minutes from Kingston Pier, and the site is dived only on calm days with the southerly swell down. Numeric fields are left blank rather than guessed.

Norfolk Island is about 1,450 km east of Brisbane; flights run from Sydney and Brisbane (about 2.5 h; check the current carrier). A hire car is essential. Norfolk has no harbour: Norfolk Island Diving's open boat is lowered by crane from Kingston Pier (south coast) or Cascade Pier (north-east coast), whichever is in the lee of the day's wind, and divers board from the pier steps once it is in the water.

For Phillip Island the boat launches at Kingston Pier and runs about 6 km south past Nepean Island, roughly 15–20 minutes. Phillip Island is part of Norfolk Island National Park; landing requires a permit and is not part of the dive.

Norfolk's south coast, including Kingston, Nepean Island and Phillip Island, faces the prevailing south-east trade winds and southerly swell, which are strongest from May to September. A south-easterly over about 15 knots or a southerly swell above 1.5–2 m makes the boat launch at Kingston Pier unworkable and the southern sites rough; they are dived on northerly or light-wind days, often in summer. Surge is felt in caves and gutters with any swell.

Visibility is typically 20–40 m and can exceed 40 m in winter. There are no stingers, and cyclones rarely reach this far south, though ex-tropical lows can bring big seas in summer and autumn.

Follow the guide's briefing; plan for current and an open-water ascent under an SMB.

Norfolk Island Diving (local instructor James and divemaster Mitch Graham) – small open boat craned in at Kingston or Cascade Pier depending on wind; runs part-time, mostly weekends, so book ahead by email (norfolkislanddiving@gmail.com).