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.

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.

Little Armstrong Bay on Rottnest Island offers a sheltered shore entry dive suitable for beginners. The site features a reef and cave topography with depths ranging from 6 to 7 metres, averaging 4 metres. Divers benefit from mild currents and visibility typically between 15 and 20 metres. Water temperatures fluctuate between 19C and 23C, necessitating appropriate thermal protection year-round. The bay is protected from waves and winds, providing a stable environment for underwater exploration. Divers should remain aware of potential boat traffic in the area. Conditions are most settled during the spring and autumn months.

Geordie Bay on Rottnest Island provides an accessible shore entry from a sandy beach, suitable for beginners. The site features a transition from seagrass beds to reef structures, with small cave and cavern formations. Depths range from 0 to 16 metres, and the area is generally sheltered with mild currents. Snorkelers should remain vigilant for boat traffic, as the bay is a popular anchorage, and be aware of jellyfish in the shallows. Facilities including toilets and a cafe are located near the beach. Water temperatures are influenced by the Leeuwin Current, ranging between 19C and 23C throughout the year.

Parakeet Bay on Rottnest Island is a sheltered shore-accessible site featuring a diverse mix of reef, seagrass beds, and kelp forest. With depths ranging from 1 to 4 metres and an average of 2 metres, the site is well-suited for beginners. The bay is protected from prevailing winds, providing calm conditions and minimal current. Visibility can reach up to 30 metres, though it varies. Visitors should exercise caution near the limestone cliffs, which are unstable and prone to collapse. The site is best accessed in the morning to take advantage of settled conditions before afternoon winds develop.

The City of York is a historic wreck located 200 metres offshore at Rottnest Island. Resting in shallow waters between 4 and 9 metres deep, this site is suitable for beginners. Divers explore the wreck structure and surrounding reef, which feature sponges and various marine life including crayfish, Western Blue Devil, Western Dhufish, Western King Wrasse, and Australian Giant Cuttlefish. Conditions are generally manageable with a mild current, though visibility varies significantly from 3 to 20 metres depending on weather. Boat access is required to reach the site. Divers should exercise caution regarding sharp coral and potential entanglement hazards within the wreck structure, while also monitoring surf conditions before entry.

The Basin is a sheltered reef and seagrass site located at Rottnest Island, Australia. With depths ranging from 1 to 10 metres and an average of 3 metres, it is well-suited for beginner divers and snorkellers. The site is protected from most winds, maintaining mild currents and visibility between 15 and 30 metres. Water temperatures are influenced by the Leeuwin Current, remaining warmer than the mainland coast. Shore access is straightforward, supported by on-site facilities including parking, toilets, showers, and a rinse station. Divers should remain aware of potential surface chop from afternoon sea breezes and the presence of other water users in this popular area.