The eastern side of Curtis Island, located in Gladstone Harbour, is accessible primarily by boat. This site is subject to strong currents, which requires careful planning for both divers and snorkellers. Water temperatures at this location range from 20C in July to 28C during the summer months of January, February, and March. Given the current conditions, the site is better suited for experienced divers rather than beginners. Snorkelling is possible, though it receives a rating of 2/5 due to the challenging water movement. Visitors should be prepared for variable conditions throughout the year as they explore the marine environment of this coastal area.

Connors Bluff is a shore-entry reef site located in Gladstone Harbour. The site offers visibility reaching up to 20 metres, though conditions vary significantly due to exposure to rough weather and moderate currents, particularly on the eastern side of Curtis Island. Snorkellers and divers should exercise caution regarding sharp coral and the presence of jellyfish, with protective clothing recommended. Due to the potential for strong current pushes, it is essential to check local tide tables and plan activities around slack water. The site is accessible year-round, though water temperatures fluctuate between 20C and 28C throughout the year.

Egg Rock is a submerged pinnacle located off Great Keppel Island, featuring walls that descend to 30 metres. This site is suited for advanced divers due to strong currents that often necessitate drift diving. The topography consists of a pinnacle and reef structure, with depths ranging from 10 to 30 metres and an average of 20 metres. Visibility typically fluctuates between 10 and 25 metres. Boat access is required to reach this location, which is situated 27.5 kilometres from shore. Divers should be aware of deep water and strong currents, as well as the presence of jellyfish during the summer stinger season.

Facing Island in Gladstone Harbour offers a mix of reef and wreck diving at depths between 5 and 15 metres. This site is suited to intermediate divers due to moderate currents and exposure to open ocean conditions. The reef structure features hard and soft corals, including black coral trees. Divers should be aware of potential hazards including jellyfish, sharp coral, and strong currents, particularly on the exposed eastern side. Visibility is generally around 15 metres. The site is accessible only by boat, located 12 kilometres from the shore. Marine life in this habitat includes various reef fish and invertebrates typical of the region.

Barren Island, located off Great Keppel Island, features a combination of reef and wall topography. This site is suitable for intermediate divers and snorkellers, with depths ranging from 5 to 30 metres and an average of 15 metres. Access is by boat only, and the site is known for strong currents that require careful planning around tide changes. Visibility typically spans 15 to 30 metres. Species recorded around this area include various wrasses, rock cod, and sergeant fish, alongside occasional sightings of hawksbill sea turtles, epaulette sharks, and nudibranchs. Divers should be aware of hazards including strong currents, jellyfish, and sharks.

Red Beach is a reef site located at Great Keppel Island, Australia, suitable for beginner divers. The site reaches depths of up to 18 metres and features mild currents, making it a manageable location for those building underwater confidence. Access is strictly by boat, and divers must remain vigilant regarding boat traffic when entering, exiting, and performing surface checks. Water temperatures fluctuate between 20C and 28C throughout the year. As conditions vary, divers should monitor local reports before planning their visit. Always maintain neutral buoyancy to protect the reef structure and shuffle feet in the shallows to avoid disturbing marine life.

Wreck Beach on Great Keppel Island offers a manageable reef environment for beginners, with depths ranging from 4 to 15 metres and an average of 8 metres. The site is protected from northerly winds, resulting in mild currents and visibility between 7 and 16 metres. A notable feature is the ancient brain coral, which serves as a central landmark. Species recorded around this area include Hawksbill sea turtles, Wobbegong sharks, Epaulette sharks, and various reef fish such as wrasses and rock cod. Shore and boat entries are both available, and local guided tours are offered to assist in locating specific marine life and reef structures.

Bald Rock is a reef and cave site located off the eastern side of Great Keppel Island, Australia. Suitable for intermediate divers, the site features depths ranging from 6 to 18 metres with an average of 10 metres. Access is strictly by boat, and the site is only reachable during calm conditions due to its exposed location. Divers should be prepared for moderate currents that can strengthen with little warning. Species recorded around this area include various wrasses, rock cod, coral trout, and rays. Due to the potential for strong currents and the presence of lionfish, booking a guided tour is recommended to navigate the reef structure safely.