Dives beyond recreational limits or needing advanced training: deep wrecks, walls and caves. Technical notes cover gas, decompression and penetration considerations where known.
116 sites · the first 48 shown as cards, the rest listed by state below
South West Rocks · NSW
A 1950 Army lighter lost with all hands in a cyclone, undiscovered until 2009 and now one of Australia's premier deep…
Sydney South & Botany Bay · NSW
Rare 1863 iron collier with upright engine and boiler at 58–59 m in the Botany Bay approaches; lost with all but one of…
Jervis Bay · NSW
A modern trawler wreck at 60 m off Point Perpendicular with instruments still visible inside.
Forster & Seal Rocks · NSW
An 1895 gold-carrying steamer wrecked with 54 lives lost near Seal Rocks — now a deep technical wreck dive at 55-60 m,…
Newcastle & Lake Macquarie · NSW
An inverted twin-hulled crane barge in 55 m off Newcastle - the area's deepest named technical wreck dive.
A sheer-walled dead-end gorge dropping to 50–55 m, packed with colourful deep sessile life.
Sydney Northern Beaches · NSW
The midget submarine that torpedoed HMAS Kuttabul in 1942, found by recreational divers in 2006 off Bungan Head at 55 m…
A deep sea-whip and gorgonian garden at 37–50 m in 25–35 m visibility – one of NSW's finest deep dives.
A 50 m ferro-cement barge upright in 51 m off Mona Vale, discovered in 1988 and still rarely visited.
Compact WWII Empire tug at 50 m with an intact propeller and a boiler room you can look into through the hull; the…
A canoe-ended barge, fully intact with its winches, whose hold fills with schools of jewfish – the furthest out of the…
An intact 50 m MSB hopper barge on the Long Reef reef ground with an accessible bow void, in the clear water 3 nautical…
The most intact wreck off Sydney – a 1930 collier lost in a 1956 southerly buster, with enterable bridge and forecastle…
Central Coast · NSW
A deep sixty-miler collier with an intact bow and some of the best fish life of any Central Coast wreck.
Upright 1866 collier at 50 m with a tall boiler, two huge anchors and a history of sunfish, whale and dolphin…
Shoalhaven Coast · NSW
Remote offshore banks with walls to 50 m, pristine colourful sessile life and pelagic sharks including hammerheads.
A 1919 collier with two big boilers, an upright stern and a shattered propeller, in the clearest water of any Sydney…
A WWI Royal Navy minesweeper that became a Brisbane ferry, an RAN warship and a Sydney oil barge, lying beside the Dee…
An upright, relatively intact 1908 tug with boiler, galley stove and side plating in place, alone on sand off Catherine…
The most intact engine room of any Sydney wreck, buried in schooling fish, at 45 m off Royal National Park.
A towering bucket dredge on its side in 48 m with the bucket ladder still running to the bow; jewel anemones on every…
Sydney's largest scuttled ferry, upright in 48 m with four intact boilers and a swim-through boiler room; the flagship…
A fully intact 60 m hopper barge at 47 m with an enterable engine room and holds full of jewfish and trumpeter.
A 1951 sixty-miler collier with a prominent boiler and engine lying to port, in 45-47 m off The Entrance.
Port Macquarie & Camden Haven · NSW
A Commonwealth marine park protecting a cluster of pinnacles that is critical grey nurse shark habitat, with a strict…
A 1910 Manly ferry in two pieces with an intact bow and open, fish-filled interior at 45 m.
Complete 1928 collier on her side at 43–46 m with engine, boiler, funnel and masts close to the Heads, sheltered from…
An immense deep reef of walls, swim-throughs and sea-whip gardens 5 km off Cronulla, named for its wandering anemones.
A major grey nurse shark aggregation site — the Eastern Gutter has recorded more than 40 sharks at once — with a…
Batemans Bay · NSW
Deep sea-fan and soft-coral reef at 40 m+ inside a sanctuary zone, used for deep and technical training.
Deep rocky shelves and valleys in 36–45 m of clear offshore water east of North Head – a technical-depth reef few have…
Complete, upright 1909 collier with boiler, triple-expansion engine and the famous Shanks toilet, lost with all hands…
A small, atmospheric deep wreck of a 'coffin ship' lost off Bouddi in 1937, with a gorgonian-covered boiler and conger…
A rarely dived deep technical wreck 5 km east of Norah Head, lost in a 1917 gale.
The east coast's largest wreck dive — a 125 m 1910 steamship loss, now a protected heritage wreck at 38-44 m with an…
A wooden steamer's boilers and engines near Foggy Reef - the wreck whose search led to the discovery of Foggy Cave.
Port Stephens · NSW
A 1911 collier wreck at 42 m with an unusually well-preserved engine and boiler, and a strong resident mulloway and…
An intact 1885 steamer sitting upright in 42 m, where Port Jackson sharks gather to breed each winter.
Pristine vertical wall at 30–39 m with pineapplefish, blue devils and anemone-draped sea whips.
A 40 m boulder wall beside the Looking Glass, with caves holding the rare eastern blue devil fish and dense sponge…
A safer, more sheltered island wall dive close to Nelson Bay, popular for training and intermediate-level diving with a…
A rare, conditions-dependent long circuit past giant groper, dense bannerfish schools and multiple turtle species along…
A sheer 40 m wall with dense sponge growth, hidden caves and some of Fish Rock's largest resident fish — groper and…
Lord Howe Island · NSW
A circular deep reef with some of the healthiest, most varied coral at Lord Howe, in 35 m visibility.
Deep pinnacle with schooling spangled emperor, huge kingfish and Meredith's and conspicuous angelfish.
Coffs Harbour & Solitary Islands · NSW
A remote, U-shaped pinnacle with a semi-trailer-sized tunnel through its base, huge jewfish and kingfish schools, and…
An undived-since-1996 timber wreck in 40 m off Redhead - an exploration target for technical divers.
Zig-zag wall from 19 m to 34 m with overhangs and swim-throughs, a sponge-covered boulder at 40 m and 30 m visibility.
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