Dives beyond recreational limits or needing advanced training: deep wrecks, walls and caves. Technical notes cover gas, decompression and penetration considerations where known.
39 sites
Tasman Peninsula · TAS
Rarely seen 1883 steamer at 70 m beneath the Hippolyte Needle – a serious technical expedition target.
Remote seal-colony islets with bull kelp shallows, sponge reefs from 30 m and huge fish schools.
Current-swept sponge pinnacle that sank the SS Tasman; one of Tasmania's most dramatic deep dives.
Tasmania North & North-West · TAS
Up to 30 m visibility on a deep offshore bommie full of pelagics.
Sheer columnar walls under a 300 m cape at the edge of the Southern Ocean, with superb clarity.
Vertical walls that bloom with sponges, sea whips and anemones below 30 m; regarded as one of Australia's best…
Intact 88 m steamer upright at 42 m, cloaked in colour and fish; rated among Australia's best wreck dives.
Diving beneath the Candlestick and Totem Pole – columnar dolerite walls in clean oceanic water.
Tasmania East Coast · TAS
Rated 10/10 by the regional guide: granite caverns at 30-40 m lit by a flue-like opening, with clouds of butterfly…
Colourful sponge and sea-whip wall that is the fallback when the Sisters are blown out, with seals and seadragons.
A remote granite islet at the mouth of Wineglass Bay with a sheer drop to 40 m and clouds of butterfly perch.
An expedition dive on Maria Island's eastern tip: 15 m walls of yellow zoanthids and spires in exceptionally clear…
A mound rising from 40 m to 5 m - a whole vertical profile in one dive and a colourful safety stop after The Castle.
Giant kelp and walls beneath Australia's tallest sea cliffs, with seals – often paired with the Nord.
Remote island wall under the Tasman Island lighthouse with deep-water sponges, seals and clean Southern Ocean water.
A 30 m tunnel between two granite boulders at 25 m, packed with crayfish and lined with sea whips and zoanthids.
Bruny Island & D'Entrecasteaux Channel · TAS
Remote volcanic islets with swim-throughs, seals and clean Southern Ocean water off Bruny's southern tip.
A long granite drop-off bristling with sea whips, often with the clearest water in the reserve.
Deep wall under striking rock formations with sea whips and sponge gardens from 25 m.
Deep reef with massive sponges and overhangs from Go Dive Tasmania's site list.
Twin spires with a 35 m swim-through, a cave maze and deep sponge and gorgonian gardens.
Twin 10 m bommies smothered in yellow zoanthids and sea whips rising from sand at 39 m; huge schools of butterfly perch…
A 20 m-wide canyon with a 15 m sponge-covered wall, boulder swim-throughs and the local masked garden gnome.
A 100 m-plus strip of boulders covered in every colour of sponge - one of the most photogenic invertebrate gardens in…
Steep wall under Cape Surville with yellow anemone patches; a quieter alternative to the nearby Sisters.
Spectacular current-fed sponge gardens reachable from the shore at George Town.
Hobart & Derwent · TAS
Tasmania's largest shipwreck lying beneath the Tasman Bridge span it brought down in 1975 – a dark, historically…
Kelp-lined gutters on a pinnacle just outside the harbour, with good schooling fish.
The graveyard's deepest wreck – an anemone-encrusted 1883 stern with its steering quadrant at 34 m.
A full-height granite wall with an undercut cave system and tunnels lined with delicate invertebrates.
A two-sided sponge and sea-whip reef that gives deep-site colour at more moderate depths.
A stepped bommie with a chimney, dropping from 6 m to 32 m.
Dense, current-fed sponge growth on a beacon-marked rock in the Tamar channel.
A deep, rarely visited wreck off Don Heads, home to resident cod.
Tasmania North-East · TAS
Rated 9/10: a relatively intact 1885 iron ship with a canted bow and counter stern at 19-24 m.
Tasmania West Coast · TAS
The infamous entrance to Macquarie Harbour, with two shallow historic wrecks on its spits.
The largest sailing ship wrecked in Tasmania - a 2285-ton steel four-master off Swan Island.
A tragic 1907 wreck on the shoal that bears its name, periodically uncovered by shifting sand.
Tasmania Freshwater & Caves · TAS
Site of Tasmania's first cave dive (1959) - a 1.1 km zero-visibility sump, for expedition cave divers only.
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