Outer Wall is a remote, deep-water drift dive located in the Rowley Shoals. The reef structure features a vertical wall dropping to 40 metres, adorned with gorgonian fans, soft corals, and plate corals in shallower sections. Due to the site's exposure, strong currents are common, requiring advanced buoyancy control and drift diving experience. Visibility is highly variable, ranging from near-zero to 45 metres. Access is by boat only, and the site is suitable for advanced divers comfortable with deep water and significant current. Night diving is permitted. Divers should check local conditions before entry, as current strength and visibility fluctuate significantly.

Roe Reef is a remote, advanced-level site in the Rowley Shoals characterised by dramatic topography including walls, canyons, and caverns. The site features extreme tidal movements, creating powerful currents that facilitate high-speed drift dives. Divers can expect depths ranging from 5 to 40 metres with visibility between 25 and 60 metres. Due to the strong currents and deep wall structure, this site requires advanced buoyancy control and drift diving experience. Access is strictly by boat, and the location is remote, meaning emergency assistance is distant. Divers should plan dives around current cycles and maintain strict awareness of depth limits.