The Gothenburg is a historic shipwreck located on the seafloor at Old Reef. This site offers penetration diving across a depth range of 9 to 30 metres, with an average depth of 15 metres. Access is by boat only, and the site is suited for advanced divers due to moderate currents reaching up to 1 knot. Visibility typically ranges from 10 to 20 metres. Divers should exercise caution regarding the wreck as a historic site and final resting place. A torch is essential for overhead environments, and a surface marker buoy is required due to pelagic activity in the water column. Plan entries around slack tide to manage currents.

Old Reef is a boat-accessible site located 35 kilometres from the shore, featuring a combination of reef topography and the wreck of the SS Gothenburg. Divers and snorkellers can explore depths ranging from 2 to 20 metres. The site is suited for intermediate skill levels due to moderate currents that can reach 1 knot. Visibility varies between 5 and 20 metres, and the site should only be visited in good sea conditions. Hazards include boat traffic, potential entanglement on the wreck, stinging jellyfish, and currents. Divers should carry an SMB and check local conditions before entry. The habitat supports a variety of reef fish and invertebrates.