Porpoise Bay at Rottnest Island features a combination of sheltered reef and a cave system. This boat-accessible site ranges in depth from 8 to 20 metres, with an average of 15 metres. Visibility typically spans 15 to 30 metres. The site is suitable for beginners, though the cave represents an overhead environment requiring careful buoyancy control and guidance. Divers should remain aware of potential currents, which can be stronger than at other local sites, and watch for boat traffic upon entry. Water temperatures range from 19 to 23C, influenced by the Leeuwin Current.

Parker Point at Rottnest Island is a beginner-friendly reef site offering depths between 2 and 12 metres, with an average of 7 metres. The site features mild currents and visibility typically ranging from 10 to 15 metres. Suitable for both divers and snorkellers, the reef provides a relaxed environment for exploration. Water temperatures fluctuate between 19C and 23C throughout the year, influenced by the Leeuwin Current. Shore and boat access are both available, and the site is supported by on-site facilities including toilets, showers, and parking. Typical dives last approximately 60 minutes.

Salmon Bay on Rottnest Island provides a sheltered shore entry point suitable for beginners and snorkellers. The site features a diverse underwater landscape of reef and seagrass habitats, with depths ranging from 1 to 12 metres. Protected by offshore reefs, the bay typically offers calm conditions, though mild currents may be encountered further from the shore. Visibility generally fluctuates between 5 and 15 metres. Water temperatures remain between 19C and 23C, influenced by the Leeuwin Current. Toilets are available at the site for visitor convenience. Users should remain aware of potential surf conditions during entry and exit.

Henrietta Rocks is a shallow shore dive located 50 metres off Rottnest Island, Australia. The site features a combination of scattered limestone reef patches, seagrass beds, and the remnants of a small wreck resting on a sandy bottom. Depths range from 2 to 10 metres, with an average of 7 metres, making it suitable for beginners. Divers and snorkellers should be aware of mild currents and potential surf at the entry point. Water temperatures fluctuate between 19C and 23C, influenced by the Leeuwin Current. Hazards include sharp limestone, entanglement risks, and seasonal blue bottle jellyfish. Parking and toilets are available at the site.

Green Island at Rottnest Island features a combination of natural and artificial reef structures. The site ranges from shallow depths to 37 metres, with an average depth of 15 metres. Access is by boat, as the site is located 2000 metres from the shore. Divers and snorkellers should be prepared for moderate currents and visibility between 10 and 30 metres. Hazards include sharp coral, jellyfish, and variable currents. Beginners are advised to remain in the shallower sections of the reef. Facilities including a dive shop, toilets, showers, and a cafe are available nearby.

Nancy Cove at Rottnest Island is a shallow, sheltered site ideal for beginners. The topography features a reef and a cave system, with depths ranging from 2 to 8 metres and an average of 5 metres. Visibility is typically between 15 and 30 metres, allowing for clear observation of the underwater terrain. Access is possible via boat or from the shore, located 100 metres out. Divers and snorkellers should be aware of potential surge near the cave entrance and remain cautious of boat traffic in the area. Facilities including parking and showers are available nearby. The site is generally calm, though sharp coral is present.

The Lady Elizabeth is a shallow wreck and reef site located off Rottnest Island, Australia. Resting at depths between 3 and 9 metres, the site is suitable for beginner divers. Access is by boat only. Visibility typically ranges from 10 to 20 metres, though divers should be prepared for mild currents, surge, and potential thermoclines. The wreck structure presents hazards including entanglement risks from debris and enclosed overhead spaces. Divers should exercise caution regarding sharp coral and variable visibility. Water temperatures fluctuate between 19C and 23C throughout the year.

Rottnest Island features a diverse underwater landscape consisting of walls, caves, reefs, drop-offs, and a wreck. Accessible only by boat, the site offers depths ranging from 2 to 26 metres with an average of 10 metres. Divers should be prepared for moderate currents and variable visibility between 3 and 30 metres. Water temperatures fluctuate between 19C and 23C, with cold currents and thermoclines possible at North Point. Hazards include boat traffic, jellyfish, surf, surge, and strong currents. The site is suitable for intermediate divers, with facilities available for air fills, equipment rental, and guided tours. Night diving is permitted, and typical dive times are approximately 50 minutes.