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.

Pine Cave is a technical freshwater cave dive located in the Mount Gambier Sinkholes. The system features depths ranging from 25 to 40 metres, requiring full overhead environment training and rigorous decompression planning. Divers enter from the shore to explore the cave, where visibility typically fluctuates between 10 and 30 metres. The environment is static with no current, though the lower levels are prone to silting. Divers must maintain strict buoyancy control and line discipline to manage entanglement risks. The site is suitable for experienced technical divers only. Parking is available at the entry point.

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.

Cape Buffon at Southend is a shore-accessible reef system located in South Australia. This site is suited for intermediate divers, offering an opportunity to explore temperate reef structures. Entry and exit are conducted over rocks, which can be sharp and slippery, requiring protective footwear. The site is exposed to the Southern Ocean, meaning divers should monitor for surf and moderate currents. Water temperatures range from 14C to 17C throughout the year. Visibility can be variable, so conditions should be assessed before entering the water. The reef habitat supports a variety of temperate marine life, including sponges, sea stars, and various reef fish and invertebrates.