Lonsdale Reef combines wreck diving with a working reef in depths from 10 to 45 metres, placing it firmly in advanced territory. Strong currents run through here regularly, so timing your dive around slack water is essential rather than optional. Visibility ranges from 10 to 30 metres depending on conditions, with the clearest water typically arriving in the summer months of December through February. The reef structure supports gorgonians, sponges, and soft coral, and you'll find blue devilfish tucked into crevices if you slow down and look carefully. Crayfish, wrasse, leatherjackets, and sea sweep round out what's a genuinely diverse site. Boat traffic and surge add to the hazard profile, so solid buoyancy control is a prerequisite.

Catch Bag Reef sits at 16 to 18 metres, putting it comfortably within intermediate range while offering enough depth to feel properly immersive. Visibility here can swing dramatically, anywhere from 10 to 30 metres depending on conditions, so timing your dive matters. The reef draws Southern Rock Lobster and abalone, making it a productive site for spotting these species tucked into crevices and ledges. Yellowtail Kingfish also work the water column, often appearing when current picks up. Speaking of which, moderate to strong currents run through this site, so monitor your positioning and plan your entry and exit with the flow rather than against it.

Boarfish Reef takes its name from the long-snouted boarfish you are likely to encounter here, and spotting one is a genuine treat for new divers. The reef runs from 9 to 20 metres, keeping most of the action at comfortable depths while you get your eye in. Visibility ranges from 5 to 25 metres depending on conditions. The current can run strong, so always check before you go in. Slow down and look carefully because this site rewards patient observers with weedy seadragons, seahorses, octopuses, cuttlefish, anglerfish, and stargazers. Blue devil fish and crayfish are also regularly spotted around the reef and cave structure.

Flat Rock is a reef dive off Victoria that rewards beginners with a good mix of marine life at manageable depths. The shallower sections of the reef sit at around 12 metres, with deeper water dropping to 25 metres as you gain experience and confidence. Visibility swings widely from 1 to 20 metres, so conditions can vary noticeably between visits. Keep an eye out for blue devil fish and boarfish sheltering close to the reef, cuttlefish hovering in the open, and Port Jackson sharks resting on the bottom. Swell sharks, rays, soft corals, nudibranchs, and crayfish round out what you might encounter. The current here can run moderate to strong, and surge is worth watching, so go with a guided tour until you know the site well.

The Grotto is a shallow reef and cave dive sitting between 6 and 9 metres, making it accessible for beginners while still offering genuine character. The cave and wall sections give the site its structure, and visibility ranges from 5 to 15 metres depending on conditions. Keep an eye out for southern blue devil fish and boarfish tucked into the reef, along with leather jackets, nudibranchs, rays, and crayfish sheltering in the rockwork. Soft corals add colour throughout. Be aware that current and surge can be strong here, so pick a calm day and stay close to your buddy and guide.

Foggy Reef earns its name from changeable visibility that ranges from 3 to 15 metres, demanding solid navigation skills and composure when conditions shift mid-dive. Strong currents sweep across this advanced site, creating drift diving opportunities through depths from 8 to 30 metres. The overhead environment adds technical challenge, with cave systems requiring proper training and redundant light sources. The current brings nutrients that feed impressive soft coral colonies and gorgonians, their branches extending into the flow. Sponges cluster in the calmer pockets around the reef structure. Bluedevil fish hover in the mid-water, their electric blue colouration vivid even in reduced visibility. Australian fur seals occasionally investigate divers, particularly curious in summer months. Bottlenose dolphins pass through the area, though encounters remain opportunistic. Cephalopod enthusiasts should check crevices and reef edges for cuttlefish and octopus. Boat traffic overhead requires proper ascent protocols and safety stops conducted with surface marker buoys deployed. The combination of depth, current, overhead environment, and variable visibility creates a genuinely challenging dive. Plan conservatively, maintain buddy contact, and expect conditions to test your advanced training.

Boarfish Reef Bottle Drift is a current-driven dive where you read the water and let it do the work. Strong currents sweep you along the reef, so good buoyancy control and drift experience matter here. Visibility ranges from 5 to 30 metres depending on conditions, with the clearer days revealing soft corals and sponges across depths of 6 to 22 metres. The site earns its name from the boarfish you'll regularly encounter, and Blue Devil fish are worth slowing down for. Look closer at the reef structure for nudibranchs, yellow sea spiders, mosaic sea stars, and crayfish tucked into the crevices. Boat traffic is a real consideration on ascent, so deploy your SMB.

Cottage by the Sea is a shallow reef dive off Victoria's coast, with depths sitting between 6 and 10 metres, making it a comfortable option for beginners still building confidence underwater. Visibility ranges from 10 to 30 metres, so you can generally see the reef clearly without straining. You will find various reef species around the site, and the shallow, well-lit water gives you plenty of time to observe them at a relaxed pace. Be aware that current can run moderate here, and boat traffic is a real consideration, so always dive with a surface marker buoy and stay alert after your ascent.