Tank Cave is a complex freshwater cave system located in the Mount Gambier Sinkholes. This site is strictly for divers with full cave certification, as it is an overhead environment featuring a maze-like layout. Divers typically reach depths of 15 to 20 metres, with visibility ranging from 20 to 30 metres. The water temperature remains constant between 14 and 17C throughout the year. Due to the risk of silt-out and entanglement, this site requires meticulous navigation and redundant lighting. Access is via the shore, and divers should confirm current permit requirements and site restrictions before arrival.

Fossils Cave is a freshwater sinkhole dive featuring embedded fossils of extinct megafauna within the cave walls and substrate. This site is strictly for expert divers due to the overhead environment, which requires full cave training, appropriate redundancy, and the use of a guideline. The average depth is 13 metres, with a maximum of 16 metres. Visibility is typically 40 metres, though the dark silt on the bottom can be easily disturbed. Water temperatures remain cold, ranging from 14C to 17C throughout the year, necessitating the use of a drysuit. There is no current, but the overhead environment demands careful gas planning and decompression management.

Kilsby Sinkhole is a freshwater blue hole located on private property in South Australia. This cavern site offers visibility between 50 and 80 metres, with dramatic light effects visible near the surface. The site reaches depths of 60 metres, with an average depth of 27 metres. Divers experience calm, current-free conditions in a consistent 15°C water temperature. As an overhead environment, it requires appropriate training and awareness. The site is accessible via shore entry, and guided tours are available for those navigating the cavern. Due to the cold water and depth, thermal protection is essential for all divers.

Carpenter Rocks is a beginner-friendly reef dive located in South Australia. The site features a reef structure ranging from 8 to 12 metres in depth, making it suitable for divers building confidence. Divers can expect mild currents and visibility between 5 and 10 metres. Water temperatures at this site fluctuate between 14 and 17 degrees Celsius throughout the year. Access to the site is by boat, and it is recommended to confirm boat operator availability locally before planning a trip. The site is accessible year-round, allowing for flexible scheduling for those looking to explore the reef structure.

Little Blue Lake is a freshwater blue hole and cavern dive located in South Australia. The site features depths ranging from 25 to 47 metres, with an average depth of 36 metres. Divers enter from the shore via stairs, encountering immediate depth upon entry. Conditions include a thermocline where surface temperatures reach 18 to 23C, while deeper water remains consistently cool at 12C. Visibility is highly variable, ranging from 5 to 25 metres. Due to the overhead environment, deep water, and potential for silting, this site is suited for intermediate divers with appropriate training. A drysuit or thick wetsuit is recommended to manage the cold water temperatures.

Port MacDonnell Pier is a shore dive in South Australia that functions as an artificial reef. The pier pylons support a dense community of bryozoans, hydroids, soft corals, and gorgonian corals. Divers can explore the structure to find crayfish and feather stars among the growth. The site is shallow and calm, making it suitable for beginners, though visibility can be limited by silt. Water temperatures remain cold year-round, ranging from 14C to 18C, necessitating at least a 5mm wetsuit. Divers should exercise caution regarding potential entanglement on jetty piles and debris. A torch is recommended to inspect the darker corners of the pylons.

Ewens Ponds is a freshwater spring system consisting of three interconnected ponds. A gentle, mild current flows from the first pond to the third, facilitating a drift dive or snorkel. The site features depths ranging from 1 to 10 metres with an average of 9 metres, making it suitable for beginners. Visibility is high, typically between 30 and 80 metres. Entry is from the shore, with parking and toilets available on site. Due to the cold water temperatures of 14 to 18C, a full-length wetsuit of at least 5mm is mandatory. Access is managed by a permit system, and bookings should be made in advance.

Piccaninnie Ponds is a freshwater cave system featuring a main pond that leads into The Chasm, a vertical fissure reaching depths of 35 metres. Divers experience visibility ranging from 20 to 60 metres, though sediment disturbance can reduce this. The site requires advanced skills for navigating overhead environments and maintaining buoyancy. Water temperatures remain cool, between 14 and 17C, necessitating appropriate thermal protection. Entry is via the shore, and the current is generally mild. Divers must secure permits in advance and should carry a torch for the deeper sections of The Chasm. Hazards include cold water, entanglement risks, and the overhead environment.