The Mandurah Artificial Reef was the first artificial reef in Western Australia paid for entirely by recreational fishers, through about $1.1 million of licence fees administered by Recfishwest. Deployed in 2016, it consists of 30 hollow concrete fish-box modules arranged in six clusters in about 25 m of water, 12 km west of the Mandurah Ocean Marina.

The reef was designed to attract demersal and pelagic fish, and anglers report good catches, which suggests healthy fish populations. Recfishwest and researchers have reported positive monitoring results. Divers can expect schools of fish around the modules, with species typical of Perth's offshore reefs such as pink snapper, samson fish, King George whiting on the sand, and sponges and invertebrates colonising the concrete.

It is not a dive site in the conventional sense. It is deep for recreational divers, 12 km offshore and exposed, it is covered in fishing line and tackle (MadMackie notes the hollow modules claim a lot of gear), and anglers may be anchored or drifting overhead. Divers should use a shot line, fly the dive flag and stay close to the modules.

For experienced divers with their own boat, it offers a chance to see how quickly a purpose-built reef develops. Published diving information is almost nonexistent, so treat this record as a guide to location and structure rather than to marine life.

The clusters are spread over an area, so a GPS is needed to find each one, and divers should agree on a single cluster per dive rather than trying to swim between them. Deploying a surface marker buoy before ascending helps the boat and nearby anglers keep track of divers.

Launch at the Mandurah Ocean Marina ramp or the Dawesville Cut (Port Bouvard) ramp. The reef is about 12 km west of the Mandurah Ocean Marina and roughly 10 km north-west of the Dawesville Cut; the centre point is 32°31.59'S 115°34.98'E, and MadMackie lists cluster positions. Allow 20–25 minutes in a trailer boat.

Drop a shot next to a cluster rather than anchoring on the modules.

Open ocean 12 km offshore, fully exposed to swell and wind. Dive only in light winds and swell under about 1.5 m, and return before the strong summer sea breeze builds around midday. Winter fronts bring north-westerly gales.

Currents can run across the site. A reliable forecast is essential because there is no shelter nearby, and conditions can change quickly when the sea breeze arrives.

Drop a shot beside one cluster, descend to the modules at 22–25 m and circle them looking inside the openings for fish, then return to the shot. Watch no-decompression limits and do a safety stop on the line.

Nitrox 28–32% extends bottom time; carry a cutting tool and surface marker buoy.

No regular dive operator; built for anglers. Dived occasionally from private boats.