Avoca offers a diverse underwater environment near Copacabana, featuring a combination of natural reef, wreck, and artificial reef structures. The site spans a significant depth range, starting from shallow areas at 2 metres and extending to 32 metres. Due to the depth, decompression planning is essential. Divers can access the site via boat or shore, though boat access is required for the deeper sections located 1800 metres offshore. Conditions, including visibility and currents, are variable and require careful monitoring. The site is suited for intermediate divers who can manage changing conditions and deep-water profiles. Facilities including parking, toilets, showers, and a dive shop are available.

Avoca Rock Pool in Copacabana provides a sheltered, shallow environment for beginners and snorkellers. The site consists of a reef-based rock pool with depths ranging from 0 to 2 metres, averaging 1 metre. Visibility typically spans 4 to 9 metres. Access is via the shore, though users should exercise caution due to potential surge and swell near the pool edges. Facilities at the site include parking, toilets, showers, and a cafe. Visitors are advised to shuffle their feet when entering and exiting to avoid sharp coral and rocks, and to time their entry between wave sets.

The ex-HMAS Adelaide is a purpose-sunk decommissioned warship located 1400 metres off Copacabana. The wreck sits at depths ranging from 13 to 37 metres, with an average depth of 33 metres. This site is for advanced divers only, requiring boat access. Conditions are variable, with visibility between 5 and 40 metres and currents ranging from 0 to 3 knots. The structure presents significant hazards, including overhead environments, entanglement risks, and surge. Note that the site was closed in July 2024 due to structural damage and collapse from storm events, which created extreme risks of entrapment and crush injuries. Diving is currently not permitted at this location.

The Slide at Copacabana offers a straightforward shore dive featuring a combination of sloping reef and wall topography. Divers can explore depths ranging from 8 to 18 metres, with an average depth of 16 metres. The site is suitable for beginners, though entry requires careful timing due to the shore break. Conditions include mild currents and visibility typically between 4 and 9 metres. Water temperatures fluctuate between 18C and 23C throughout the year. Parking is available nearby, allowing for a relaxed gear setup. Always check surf conditions before entering the water and remain close to the reef wall to avoid being pushed offshore.

Skillion Cave is a technical shore dive located 50 metres off the coast of Copacabana. The site features a swim-through cavern and a wall drop-off reaching depths of 24 metres, with an average depth of 18 metres. Divers must navigate an entry and exit over a rock platform, which is hazardous in any swell. Surge can be strong within the cavern, requiring careful timing and attention to wave sets. Due to the overhead environment and potential for surge, this site is suited for intermediate divers. Visibility typically ranges from 5 to 15 metres, with the best conditions occurring during the cooler months.

The Haven in Terrigal is a sheltered shore entry site suitable for beginners. The topography transitions from sandy shallows through seagrass beds into patchy reef and kelp forest, reaching depths between 3 and 15 metres. Visibility typically ranges from 5 to 9 metres. While the bay is generally protected with mild currents, surge can be significant near the reef during swells. The site is a popular multi-use area, so users must remain cautious of boat traffic from the nearby ramp. Facilities including parking, toilets, showers, and a cafe are available on-site. The site is also accessible for night diving.

Copacabana Beach at MacMasters Beach offers a shore-entry site featuring a mix of reef and seagrass beds. The topography consists primarily of a sandy bottom, suitable for beginners looking to build confidence in shallow water. Visibility at this site typically ranges from 4 to 10 metres. Currents are generally mild, though they can be influenced by local tides and swell. Divers and snorkellers should remain aware of surf conditions and potential rip currents, particularly near the entry point. The northern end of the beach is frequently used by surfers, requiring caution. Facilities including parking, toilets, showers, and a dive shop are available on site.

MacMasters Beach rockpool is a sheltered, shallow site located 50 metres from the shore. With depths ranging from 1 to 2 metres, it provides a controlled environment suitable for beginners. Visibility typically fluctuates between 4 and 10 metres. The site is accessed directly from the shore, though entry is easiest during mid to low tide on calm days to avoid surge. The water temperature varies between 18C and 24C depending on the season and sun exposure. Facilities including parking, toilets, showers, and a cafe are available on site. Divers and snorkellers should remain aware of potential waves washing over the outer wall during high tide or large swells.