Little Armstrong Bay is a sheltered shore entry reef dive sitting in easy shallow waters of 6 to 7 metres, making it a comfortable choice for beginners getting comfortable in the ocean. Visibility regularly reaches 15 to 20 metres, so you can take your time exploring the coral and watching the fish life without straining to see. You can expect to encounter King George whiting, bream, buff bream, herring, garfish, cod, salmon, and flathead moving around the reef. Current is mild, so navigation is relaxed. Come prepared for cold water, as a wetsuit is essential year-round here.

North Point Reef combines reef structure, cave exploration, and drift diving across depths of 8 to 30 metres, with visibility reaching 30 metres on good days. Moderate current runs through the site consistently, and surge near the caves demands solid buoyancy control. The reef hosts Australian sea lions, which interact unpredictably and memorably, alongside Port Jackson sharks resting in crevices and Western blue groper cruising the reef face. Look closely for harlequin fish, nudibranchs, and the unusual soft gingerbread hem star. Western rock lobster shelter in the rocky overhangs. Sharp coral and variable currents make this unsuitable for inexperienced divers.

Swirl Reef combines a dynamic reef environment with cave sections, giving intermediate divers plenty to work with across depths of 4 to 24 metres. Visibility swings considerably, from 3 metres on rougher days up to 20 metres when conditions align, so timing your visit matters. Current is variable, and surge near the cave openings and sharp coral demand attentive buoyancy. The marine life mix leans characteristically Western Australian: Australian sea lions show up with their usual curiosity, while western blue devils and harlequin fish hold territory around the reef structure. Smooth rays, buffalo bream, western king wrasse, Australian giant cuttlefish, and western rock lobster round out what you can reasonably expect to encounter.

Parakeet Bay is a gentle shore dive sitting in just 1 to 4 metres of water, making it one of the most approachable entries for new divers in Western Australia. The bay combines reef, seagrass beds, and kelp forest in a small area, so there is plenty to explore without covering much ground. Visibility can reach up to 30 metres on good days, though conditions vary. Keep an eye out for Miller's damselfish, sea stars, cuttlefish, and octopuses among the reef structure, and Western Rock Lobster tucked into crevices. Port Jackson sharks rest on the bottom periodically, and the curious Western Blue Groper is a reliable highlight.

Rottnest Island offers a genuinely varied underwater landscape, with walls, caves, drop-offs, and at least one wreck all accessible by boat. Depths run from 2 to 26 metres, and visibility swings considerably depending on conditions, anywhere from 3 to 30 metres, so timing your dive matters. A moderate current runs through most sites and can strengthen without much warning, so stay aware of your position throughout the dive. Keep an eye on surge near the walls and caves. Reef fish and nudibranchs reward patient divers who slow down and look carefully, while lobsters tend to tuck into crevices and overhangs. Boat traffic is a real consideration on ascent.

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.

Geordie Bay offers one of Rottnest Island's most accessible shore dives, perfect for building your confidence in a sheltered environment. You'll enter from the sandy beach and work your way out over seagrass beds that gradually transition into reef structures, with depths ranging from 1 to 16 metres. The mild current makes navigation straightforward, though visibility changes throughout the day depending on conditions and wind direction. The seagrass meadows attract schools of fish that move in coordinated patterns across the bay, while gloomy octopuses hunt among the rocks if you take time to search the crevices. Stingrays glide over the sandy patches between reef sections, and crayfish tuck themselves into darker spots during daylight hours. Small cave formations along the reef add interest to your dive without requiring overhead environment training. Watch for boat traffic as you surface, particularly during busier periods, and keep an eye out for jellyfish in the shallows. The bay's facilities include toilets and a cafe near the beach, making it easy to spend several hours here. Autumn months from March to May typically offer the most settled conditions for exploring this varied underwater landscape.