The Alkimos Wreck is a Greek cargo ship that ran aground off the coast of Cottesloe. Resting in shallow depths of 4 to 7 metres, this site is accessible for beginner divers via a 400-metre shore entry. The wreck structure remains the primary feature, though divers should exercise caution due to potential surge, moderate currents, and sharp coral growth on the hull. Visibility typically ranges between 3 and 5 metres. Given the shallow nature of the site, it is suitable for extended dives, though entry into the wreck itself is discouraged. Always monitor local conditions and exit the water if visibility or surge levels become hazardous.

Yanchep Beach is a shore-accessible reef site located 20 metres from the coast. The reef features shallow depths ranging from 5 to 10 metres, with an average depth of 5 metres. Visibility typically spans 10 to 30 metres. The site is suitable for beginners, though conditions vary; it is susceptible to strong currents, surge, and rip currents, particularly when waves break over the reef. Divers should monitor swell conditions, as large swells reduce visibility and increase surge. A dive flag is recommended due to local boat traffic. Onsite facilities include parking, toilets, showers, and changing rooms, with accessibility mats and beach wheelchairs available during patrolled hours.

Billy's Basin is a cave dive located off Cottesloe, Australia, requiring boat access. The site features a cave structure with depths ranging from 12 to 18 metres, averaging 12 metres. Visibility is variable, typically between 10 and 30 metres. Due to the overhead environment and variable currents, this site is suited for intermediate divers with solid buoyancy control. Divers must be aware of hazards including boat traffic, potential entanglement from discarded fishing lines, and the overhead environment. A torch and surface marker buoy are essential equipment for this dive. Plan your visit around calmer current windows during the spring and autumn months.

The Apartments in Cottesloe is a structured reef system featuring stacked coral formations that create a series of caves and swim-throughs. The site ranges in depth from 8 to 18 metres, with an average of 12 metres. Divers should be prepared for surge, particularly in shallower sections, and remain aware of potential boat traffic at the surface. Visibility typically ranges between 10 and 15 metres. Due to the complex topography and variable currents, this site is suited for intermediate divers. Access is by boat only. Species recorded around this area include nudibranchs, wrasses, toadfish, cardinalfish, crabs, and various reef fish.

Mindarie Reef offers a varied underwater landscape featuring reef structures, caves, and a canyon that descends to 30 metres. Located 5000 metres offshore, this site requires boat access and is suited to intermediate divers. Depths range from 6 to 30 metres with an average of 15 metres. Visibility typically fluctuates between 7 and 20 metres. Divers should be prepared for mild currents and potential surge, particularly within the shallower reef areas and canyons. Due to frequent boat traffic, including crayfish fishermen, the use of a surface marker buoy is essential during ascents and safety stops. Water temperatures range from 19C to 23C throughout the year.

Burns Rock is a shallow reef site located 1500 metres offshore from Cottesloe, Australia. The site features depths ranging from 2 to 10 metres, with an average depth of 6 metres, making it suitable for beginner divers. The rock surfaces are covered in coralline algae. Access is by boat only, and divers should be aware of potential surge, particularly when swells exceed 1 metre. Due to the site being a popular boating area, surface boat traffic is a hazard, and the use of a dive flag is essential. Visibility typically ranges between 10 and 15 metres, with water temperatures varying from 19 to 23 degrees Celsius.

Bat Caves is a reef dive located off Cottesloe, Australia, offering depths between 5 and 25 metres. This site is suitable for beginners, though divers must be prepared for boat entry in surf conditions. Visibility typically ranges from 8 to 12 metres. While currents are generally mild, they can strengthen, requiring careful monitoring. Species recorded around this area include Ornate Wobbegong, Weedy Seadragon, Port Jackson Shark, Western Blue Devil, and various wrasses. Divers should check local surf forecasts and conditions before departure, as the environment can change quickly.

North Lump is a deep wreck site located 18.5 kilometres off the coast of Cottesloe, Australia. The site features a wreck structure that serves as an artificial reef, with depths ranging from 26 to 42 metres and an average depth of 32 metres. Due to the depth and overhead environments within the wreck, this site is strictly for advanced divers. Divers must manage decompression stops, nitrogen narcosis, and entanglement risks carefully. Currents are variable and can shift unexpectedly. Boat access is required for this site, which typically involves a 20-minute dive duration. Visibility can be limited, and divers should be prepared for reduced light conditions during penetration.