Outer Wall is a deep-water site that demands respect and rewards experience. The wall drops well into the 40-metre range, where gorgonian fans and soft corals line the structure alongside plate corals in shallower sections. Visibility can swing dramatically, anywhere from near-zero to a remarkable 45 metres, so conditions vary considerably between visits. Strong currents run regularly here, which is precisely what draws greater hammerheads, sharks, and bluefin trevally to work the wall. Sea turtles and Moorish idols round out the regular sightings. Boat access only, and this is firmly advanced territory given the depth and current exposure.

Clerke Reef sits in the Rowley Shoals, roughly 300 kilometres west of Broome, and delivers some of Western Australia's most dramatic wall diving. You'll descend along near-vertical coral faces that drop from the shallows to 40 metres, with strong currents bringing in pelagic action throughout the dive. The site works well as a drift dive, letting you glide along the wall whilst scanning the blue water for passing sailfish, tuna, and schools of mackerel. Grey reef sharks and whitetip reef sharks patrol the deeper sections, whilst giant potato cod cruise the mid-depths with surprising curiosity. Maori wrasse lumber through the reef structure, and sea turtles appear regularly on the shallower sections. Visibility ranges dramatically from near-zero to 50 metres depending on conditions and current strength, so prepare for anything. The caverns along the wall offer shelter from the current and harbour nudibranchs in the quieter pockets. You'll occasionally spot dolphins in the surrounding waters during surface intervals. The strong currents demand solid buoyancy control and drift diving experience. This is boat-only access with charter operations running from Broome during the winter months, typically August through October when conditions are most reliable.

Blue Lagoon sits within the remote Clerke Reef system, offering boat-access diving across a reef that extends from a manageable 8 metres down into deeper water at 30 metres. Visibility here is exceptional, regularly reaching 20 to 50 metres in the clear offshore water, which makes reading the reef structure and tracking movement in the water column straightforward. Moderate currents run through the site, making drift diving the practical approach rather than an optional extra. Those currents also do the work of bringing various reef species past you. Sharks are a genuine presence, so maintain awareness throughout your dive.

Imperieuse Reef sits in the remote Rowley Shoals off Western Australia, offering wall and canyon diving in crystal clear visibility of 40 to 50 metres. Depths run from the shallows down to 40 metres, with strong currents that push nutrients through the system and attract serious pelagic life. Hammerhead sharks, manta rays, reef sharks, and large tuna are regular visitors, while potato cod and maori wrasse patrol the reef structure. Sea turtles and giant clams are found throughout, and humpback whales and spinner dolphins pass through seasonally. Plan your dives around current windows as the flow here demands respect.

Supermarket earns its name from the sheer concentration of apex predators that patrol this wall and reef system off Western Australia. Strong currents are a constant here, pushing down to 40 metres against a wall with visibility that can stretch to 60 metres on good days. That current is your friend and your challenge: it draws in grey reef sharks, whitetip reef sharks, silvertip sharks, and occasionally hammerheads, alongside giant potato cod and Maori wrasse. Manta rays, sea turtles, dolphins, and humpback whales round out an already serious pelagic cast. This is boat-access only, and you need solid drift diving skills before committing to it.