Cockatoo Point is a boat-access reef site located off Hook Island, Australia. Suitable for beginners, the site features a diverse structure of hard and soft corals, including staghorn, plate, boulder, brain, mosaic, and lunar varieties, alongside mushroom and elephant ear corals. Divers and snorkellers can explore depths ranging from 1 to 20 metres, with an average depth of 10 metres. Visibility typically fluctuates between 5 and 15 metres. Due to moderate currents and the presence of jellyfish, a full wetsuit or lycra suit is recommended for protection. Boat entry is required, and divers should monitor current strength throughout the 45-minute typical dive duration.

Butterfly Bay on Hook Island is a reef site suitable for beginners, offering depths between 5 and 15 metres with an average of 10 metres. Access is by boat only, and divers should be aware of mild currents and potential jellyfish and sharks. Visibility ranges from 2 to 10 metres, with morning dives often providing the best conditions. Marine life recorded here includes wrasses, sixbanded angelfish, Rainford's butterflyfish, maroon clownfish, copperband butterflyfish, coral trout, foxface rabbitfish, Pacific bullethead parrotfish, and rock cod. Napoleon wrasse, barramundi cod, and Chromodoris nudibranch are occasionally sighted, while reef manta rays are rare.

Blue Pearl Bay on Hook Island offers reef diving and snorkelling at depths between 2 and 18 metres, with an average depth of 10 metres. The site features a mix of reef and wall topography. Access is by boat, and the site is suitable for beginners. While the bay is generally protected, divers should be aware of strong currents at Castle Rock on the southern end. Visibility ranges from 3 to 15 metres. Water temperatures remain between 22C and 29C throughout the year. Hazards include seasonal jellyfish and strong currents. Stinger season, with risks of Box Jellyfish and Irukandji, occurs from October to May.

Big Peninsula, also known as Secret Beach, is a boat-accessible reef and wall dive on Hook Island. The site features a wall that drops from the shallows to a maximum depth of 30 metres, with an average depth of 15 metres. Divers encounter moderate to strong currents, particularly around the island points, making this site suitable for intermediate divers. Slack tide is recommended for optimal conditions. Visibility ranges from 4 to 15 metres. Species recorded around this area include Napoleon Wrasse, Green Sea Turtle, Giant Trevally, and various wrasses. Stinger season occurs from November to May, during which a full-body lycra suit is highly recommended to mitigate jellyfish hazards.

Dolphin Point is a reef dive site located off Hook Island, offering depths between 5 and 18 metres. The site is known for its open water conditions and moderate currents, which often attract pelagic activity. Divers should note that currents can strengthen, particularly near the point, and it is recommended to time dives with slack tides and calm weather. Visibility at the site varies between 3 and 15 metres. Access is by boat only. Due to the presence of Irukandji and Box Jellyfish between October and May, wearing a full-body stinger suit is highly recommended for safety.

Saba Bay at Hook Island is a reef site suitable for beginners, offering depths between 5 and 17 metres with an average of 11 metres. Access is by boat only, as the site is located 18 kilometres from the shore. Divers and snorkellers can expect mild currents and visibility ranging from 20 to 30 metres. The site is exposed to south-easterly winds, and parts of the reef are currently recovering from the impact of Cyclone Debbie in 2017. Hazards include sharp coral, and stinger season for Irukandji and box jellyfish occurs from October to May. Water temperatures remain warm throughout the year, ranging from 22 to 29 degrees Celsius.

Mackerel Bay on Hook Island is a shallow reef site ideal for beginners. Divers and snorkellers can explore depths ranging from 1 to 8 metres, with an average depth of 5 metres. Access is via a shore entry approximately 200 metres from the beach. Conditions are generally mild, though visibility can fluctuate between 10 and 30 metres depending on tides and weather. Water temperatures range from 22C to 29C throughout the year. When entering or exiting, shuffle your feet to avoid sharp coral and rocks, and remain aware of the shore break. Always check local conditions for current and visibility updates before entering the water.

Luncheon Bay, located on Hook Island, provides a reef and wall environment suitable for beginners. The site features depths ranging from 3 to 20 metres, with an average depth of 9 metres. Navigation is straightforward due to mild currents, which typically remain below 1 knot. Access is exclusively by boat charter. Visibility varies significantly from 3 to 30 metres depending on conditions. During stinger season, which runs from October to May, the use of a full-body stinger suit is recommended to mitigate the risk of dangerous jellyfish. Water temperatures fluctuate between 22C in winter and 29C in summer.