Horseshoe Reef is a beginner-friendly boat dive in Western Australia that combines open reef with a cave section, giving you variety without demanding much experience. Depths run from the surface down to 18 metres, so you can explore at a comfortable level while you build confidence. Visibility can be variable, so conditions do change between visits. The mild current keeps things manageable. What draws divers here is the resident wildlife: Australian sea lions, wobbegong sharks, Port Jackson sharks, bull rays, and Australian giant cuttlefish are all possible encounters, along with colourful harlequin fish, western blue devils, nudibranchs, and western rock lobster. Watch for boat traffic on the surface when ascending.

The City of York is a historic wreck sitting in easy shallow waters off Western Australia, making it an accessible first wreck dive for beginners. Depths range from 4 to 9 metres, and visibility can reach up to 20 metres on a good day, though 3 metres is possible on less favourable ones. A mild current keeps conditions generally manageable. The wreck and surrounding reef host crayfish, Western Blue Devil, Western Dhufish, Western King Wrasse, Australian Giant Cuttlefish, Harlequin Fish, and various sponges. Watch for sharp coral when exploring the structure, and stay aware of any loose lines or debris that could cause entanglement.

Shark Cave earns its name. This boat-access site in Western Australia puts you in close proximity to grey nurse sharks and Port Jackson sharks, with wobbegongs typically settled on the bottom throughout the cavern environment. Depths run from 11 to 26 metres, with visibility ranging from 10 to 25 metres in the clearer conditions. Moderate to strong current moves through regularly, and surge adds an additional variable inside the overhead sections. Dhu fish, Western blue groupers, and smooth rays round out the marine life. The combination of depth, current, surge, and overhead environment means this site demands solid buoyancy control and genuine overhead environment experience before you drop in.

Eagle Bay combines natural reef, a wreck, and artificial reef structures across a depth range of 6 to 32 metres, giving intermediate divers plenty to explore across multiple visits. Visibility runs 10 to 25 metres, though moderate currents require attention, particularly around the deeper sections where down-currents can develop. Australian sea lions are a genuine highlight here, curious and interactive by reputation. Port Jackson sharks, Australian giant cuttlefish, western blue groper, harlequin fish, and western rock lobster round out the regular cast. Watch your buoyancy near the bottom: stonefish, lionfish, and sea urchins are present and easy to miss.

Fish Hook Bay offers a gentle introduction to reef diving in Western Australia, with easy shallow waters reaching just 10 metres and visibility that can stretch to 20 metres on a good day. The reef supports coral gardens alongside a varied cast of marine life, including western blue devils, king wrasse, buffalo bream, and several ray species such as smooth, black, fiddler, and eagle rays. Sea stars, sea cucumbers, and nudibranchs are worth seeking out along the bottom, and dolphins occasionally pass through. Current is typically mild, making it manageable for newer divers. Watch for boat traffic and occasional surge near the reef.

West Patch is a boat-access reef and cave dive in Western Australia that rewards intermediate divers with a solid mix of pelagic and benthic life across 18 to 26 metres. Visibility ranges from 4 to 15 metres depending on conditions, and moderate to strong current means you should plan your dive around the slack. The caves and overhangs shelter wobbegong sharks and Australian giant cuttlefish, while Port Jackson sharks and nurse sharks are regular fixtures on the reef structure. Keep an eye out for Australian sea lions, Western blue devils, harlequin fish, and Western rock lobster tucked into crevices. Western Australian dhufish round out the species list in the deeper sections.

Nancy Cove is a calm, shallow site that works well for beginner divers and snorkellers. Depths run from 2 to 8 metres with no current to deal with, and visibility regularly reaches 15 to 30 metres, so you can see clearly across the reef and into the cave. The cave feature is worth exploring slowly as wobbegong sharks rest on the bottom and octopus tuck themselves into crevices. Out on the reef, keep an eye out for cuttlefish, snapper, buffalo bream, and western rock lobster. Surge can push you around near the cave entrance, so move steadily and stay aware of your position.

Green Island offers shore-based reef diving off Western Australia, with visibility ranging from 10 to 18 metres giving you a clear view of the surrounding reef and its various species. The site runs from shallow areas down to 35 metres, so as a beginner you'll want to stay in the shallower sections where the diving is more relaxed and manageable. Currents here are variable, meaning conditions can change between visits, so always check before you get in. Watch your buoyancy carefully around the reef, as the coral is sharp and contact can cause cuts as well as damage the reef itself.