Big Seal Rock's signature cavern dive combines technical challenge with exceptional marine encounters in one of New South Wales' most demanding sites. You'll drop down a dramatic wall from 12 metres to the cavern entrance at around 30 metres, where the overhead environment opens into a swim-through large enough for multiple divers. Grey nurse sharks patrol the entrance during winter months, often in aggregations of a dozen or more, whilst wobbegong sharks rest on ledges throughout the structure. The strong currents that sweep this exposed pinnacle bring excellent visibility, often reaching 30 metres, and drive schools of kingfish and other pelagics past the rock. Black cod inhabit the deeper sections, and you'll frequently spot stingrays gliding along the sandy patches. Turtles occasionally cruise past the wall. Plan your dive carefully around the current, which can make both descent and ascent challenging. The boat traffic around Seal Rocks is significant, so surface procedures matter. Winter months from May through December offer the best conditions and the most reliable grey nurse shark sightings. This isn't a dive for pushing certification limits. Solid buoyancy control, comfort with overhead environments, and experience managing strong currents in deep water are essential.

The SS Satara sits upright on the seafloor off New South Wales at 38 to 44 metres, making this a serious dive requiring advanced certification and solid buoyancy control. Visibility ranges from 12 to 30 metres, so on a good day the full structure reveals itself in one sweep. Moderate currents are common and can strengthen without warning. The wreck hosts grey nurse sharks and wobbegong sharks resting around the hull, along with giant black cod, jewfish, and red morwong holding station near the superstructure. Kingfish, trevally, and stingrays complete a genuinely varied fish roster. Nitrogen narcosis and decompression obligations are real considerations at this depth.

Edith Breakers is a reef site off New South Wales that draws attention for its resident sharks. Grey nurse sharks, wobbegong sharks, and Port Jackson sharks all frequent the area, making this an unusually good spot for encountering multiple shark species in a single dive. Depth runs from 10 to 40 metres, so beginners should stick to the shallower sections of the reef and avoid pushing into deeper water. Visibility can reach 30 metres on good days, though it can drop considerably. Moderate currents are common here, so always check conditions before entering. Kingfish, snapper, yellowtail, and silver sweep round out the fish life.

Boat Beach is a shore entry reef dive in New South Wales suited to beginners, with shallow, calm waters and visibility reaching up to 25 metres on good days. The site is best known for its shark encounters, with Port Jackson sharks, wobbegongs, and grey nurse sharks all recorded here. Dolphins also visit on occasion. Be aware that despite the beginner-friendly depth, currents can run moderate to strong, so check conditions before you enter. The reef structure makes for interesting exploration, and the clear water means you can spot marine life well ahead of time.

Myall Lakes National Park offers straightforward shore diving in calm, shallow water, making it a comfortable choice for newer divers. Depths run from 1 to 10 metres, so you can take your time and settle into the experience without worrying about depth management. Visibility is genuinely impressive here, ranging from 15 to 30 metres, which means you get a clear, unobstructed view of the reef and its resident species below. January and February are the best months to visit. Currents can vary, so keep an eye on conditions before you enter, and watch for rip currents near the shore. Facilities are limited, so check locally before you go.

Seal Rocks combines reef, wreck and drift diving in a single location, with depths pushing to 30 metres and visibility ranging from 4 to 10 metres depending on swell and season. Strong currents run through here regularly, so situational awareness matters from the moment you enter off the boat. Those currents do the work of bringing life to you: southern eagle rays and kingfish cruise the water column, wobbegong and nurse sharks hold position on the bottom, and Australian giant cuttlefish are a consistent presence. Eastern blue devilfish tuck into reef structure, blue groper patrol the shallower sections, and loggerhead turtles pass through. Humpback whales transit the area seasonally. The overhead environment of the wreck section adds another layer of planning for penetration dives.

Number One Beach is a shore dive into shallow reef terrain, with depths staying between 1 and 10 metres throughout. Visibility here is highly variable and can be limited, so good buoyancy control matters more than usual. A moderate current runs through the site, and boat traffic adds another layer of awareness to manage. That said, the marine life makes it worthwhile: turtles, wobbegong sharks, port jackson sharks, blue groupers, rays, and occasionally grey nurse sharks and dolphins move through these waters. Entry is straightforward from shore, and parking is available on site.

The SS Catterthun is a 19th-century passenger steamship resting at 56 to 60 metres off New South Wales, placing this firmly in technical diving territory with mandatory decompression. The wreck sits alongside a wall, giving experienced divers two distinct environments to work within a single bottom time. Visibility swings wildly from near-zero to 30 metres depending on conditions, so timing your dive matters. Strong currents run regularly, and boat traffic adds another layer of hazard management. Bronze whaler sharks patrol the site with some regularity, and nannygai are present around the structure. This is not a wreck to approach casually.