Deep & Technical Dives in Western Australia

Dives beyond recreational limits or needing advanced training: deep wrecks, walls and caves. Technical notes cover gas, decompression and penetration considerations where known.

All states QLD NSW VIC TAS SA WA NT Territories

50 sites · the first 48 shown as cards, the rest listed by state below

Sort:Default Most dived Deepest Shallowest A–Z

WreckMax 200 m

Rottnest Ships' Graveyard

Rottnest Island · WA

Dozens of deliberately scuttled vessels, mostly unseen, in 46-200 m - Perth's frontier for technical wreck exploration.

Technical (decompression)Expert/Technical

ReefMax 66 m

Football Field (King George Sound)

Albany & Great Southern · WA

Deep, rarely visited canyons and bommies to 66 m with pristine sponge gardens, huge gorgonians and black coral.

Technical (decompression)Expert/Technical

WreckMax 65 mArea view

The Clipper (Maranda, Graveyard Site 06)

Rottnest Island · WA

A deep, intact iron sailing-ship hull in 65 m, the best known of the Rottnest graveyard wrecks among Perth tech divers.

Technical (decompression)Expert/Technical

Pinnacle/BommieMax 50 mArea view

Cupcakes (Clerke Reef)

Rowley Shoals · WA

Cupcake-shaped bommies with curious batfish.

Technical (decompression)Intermediate

WallMax 50 mArea view

Minis & Mighties (Clerke Reef)

Rowley Shoals · WA

Clear-water slope to a drop-off.

Technical (decompression)Intermediate

ReefMax 50 mArea view

Naturaliste Reef

Geographe Bay & Busselton · WA

A remote offshore reef with big drop-offs to 50 m, 20 nm out and rarely dived.

Technical (decompression)Expert/Technical

IslandMax 50 m

Remark Island & Frederick Island

Esperance & Recherche Archipelago · WA

Sheltered granite with seals on Remark's north side, a 50 m sponge and black coral wall on its south, and Frederick…

Technical (decompression)Advanced

WallMax 50 m

The Bat Cave (Clerke Reef)

Rowley Shoals · WA

A gorgonian-covered wall plunging to 50 m.

Technical (decompression)Advanced

WreckMax 46 m

Thornliebank Wreck (Graveyard Site 44)

Rottnest Island · WA

Standing masts on an 1886 Glasgow-built barque hulk, discovered in 2024 - the shallowest known wreck in the Rottnest…

Technical (decompression)Expert/Technical

WallMax 45 m

Blue's Canyon (Breaksea Island)

Albany & Great Southern · WA

A 300 m granite canyon only 5-6 m wide, lined with sponges and crayfish, with resident wobbegongs and huge blue groper.

Technical (decompression)Advanced

WreckMax 44 m

Sanko Harvest Wreck

Esperance & Recherche Archipelago · WA

Australia's largest wreck dive – a 174 m bulk carrier broken into giant sections in 13-44 m, protected by a 500 m…

Technical (decompression)Advanced

WreckMax 42 m

Key Biscayne Oil Rig Wreck

Perth · WA

An upturned oil rig in 26–42 m of often clear blue water, known for grey nurse sharks and large fish.

Technical (decompression)Advanced

WallMax 40 m

Breaksea Island Southern Dropoff

Albany & Great Southern · WA

Ocean-facing granite wall to 40 m with caves, sponge gardens, black coral trees and schooling pelagics.

Deep/Advanced + experienceAdvanced

WallMax 40 m

Clerke Wall

Rowley Shoals · WA

A vertical atoll wall with pelagics in 30 m+ visibility.

Deep/Advanced + experienceIntermediate

ReefMax 40 m

Imperieuse Reef

Rowley Shoals · WA

The least-publicised atoll, with the Cunningham Island lighthouse.

Deep/Advanced + experienceIntermediate

WallMax 40 m

Jimmy Goes to China

Rowley Shoals · WA

Grey reefs and silvertips on a current-swept point.

Deep/Advanced + experienceAdvanced

WallMax 40 m

Mermaid Wall

Rowley Shoals · WA

The Shoals' deepest wall, draped in red gorgonians.

Deep/Advanced + experienceIntermediate

Cave/CavernMax 40 mShore

Pannikin Plains Cave

Nullarbor Caves · WA

The deep Nullarbor cave where a 1988 collapse trapped an expedition, inspiring the film 'Sanctum'.

Cave/Cavern certificationExpert/Technical

ReefMax 40 mArea view

Roebuck Deeps

Broome & Kimberley · WA

Historic pearling grounds.

Deep/Advanced + experienceAdvanced

ReefMax 40 m

Scott Reef

Broome & Kimberley · WA

Remote oceanic atolls with walls rising from 500 m, rarely dived.

Deep/Advanced + experienceAdvanced

ReefMax 40 m

Seringapatam Reef

Broome & Kimberley · WA

One of Australia's most remote atolls.

Deep/Advanced + experienceAdvanced

Cave/CavernMax 40 mShore

Weebubbie Cave

Nullarbor Caves · WA

A colossal flooded tunnel near Eucla with 150 m lakes, extreme clarity and deep Advanced Cave sections.

Cave/Cavern certificationExpert/Technical

Pinnacle/BommieMax 38 mArea view

Anemone Lump (Easter Group)

Geraldton & Abrolhos Islands · WA

Anemone-covered coral bommie from 38 m to 3 m with baitfish clouds, big plate corals and curious emperors.

Deep/Advanced + experienceAdvanced

WreckMax 38 m

HNLMS K XI Submarine Wreck

Rottnest Island · WA

A 1924 Dutch colonial submarine, lost for almost 80 years and found in 2025, lying in 38 m with torpedo tubes still…

Technical (decompression)Expert/Technical

ReefMax 37 mArea view

Swirl Rock

Broome & Kimberley · WA

Gorgonian-draped ledges at 37 m.

Deep/Advanced + experienceExpert/Technical

Cave/CavernMax 36 mShore

Tommy Grahams Cave

Nullarbor Caves · WA

A warm-water phreatic maze with a striking halocline, a CO2-filled inner chamber and a punishing entry.

Cave/Cavern certificationExpert/Technical

ReefMax 35 mArea view

Battern Rock

Broome & Kimberley · WA

Deep reefs around an offshore rock.

Deep/Advanced + experienceAdvanced

IslandMax 35 mArea view

Gunton Island

Esperance & Recherche Archipelago · WA

Jagged ridges, bommies and undercuts with schooling samson fish and an unidentified wooden boat wreck.

Deep/Advanced + experienceAdvanced

WreckMax 35 m

HMAS Perth Wreck

Albany & Great Southern · WA

A 133 m Vietnam-veteran destroyer sitting upright in 35 m with its bridge, gun mount and engine room intact, plus an…

Deep/Advanced + experienceIntermediate

IslandMax 35 m

Legendre Island

Pilbara & Dampier · WA

The archipelago's best drop-off, with gorgonians and pelagics to 30 m+.

Deep/Advanced + experienceIntermediate

WreckMax 35 m

SS Pericles Wreck

Margaret River & Augusta · WA

Three boilers and 10 m-high engines of a 152 m Edwardian liner in 35 m off Cape Leeuwin - all 413 aboard survived.

Deep/Advanced + experienceAdvanced

Pinnacle/BommieMax 35 m

Wrights Bank

Geographe Bay & Busselton · WA

A blue-water pinnacle off Cape Naturaliste with fanning corals and big pelagics - the South West's advanced reef dive.

Deep/Advanced + experienceAdvanced

ReefMax 33 mArea view

Bunbury Offshore Coral Reefs

Geographe Bay & Busselton · WA

A little-known set of coral reefs and lumps off Bunbury from 10 m to 33 m, dived by the local charter.

Deep/Advanced + experienceIntermediate

ReefMax 32 m

20 Metre Ridge

Rottnest Island · WA

A deep offshore ridge at 20-32 m north of Rottnest for experienced divers seeking bigger fish and quiet water.

Deep/Advanced + experienceAdvanced

ReefMax 32 m

Beacon Island Dive Trail

Geraldton & Abrolhos Islands · WA

Pelagic action in the passages beside Batavia's Graveyard, from a trail off the Beacon Island jetty.

Deep/Advanced + experienceIntermediate

WreckMax 32 mArea view

Lapwing Wreck (Long Island)

Esperance & Recherche Archipelago · WA

A small, completely intact fishing boat in 32 m, smothered in soft coral and sponges.

Deep/Advanced + experienceAdvanced

WreckMax 31 m

HMAS Swan Wreck

Geographe Bay & Busselton · WA

A 113 m warship upright in 31 m with the crow's nest at 8 m and cut-outs for safe penetration - Australia's first…

Deep/Advanced + experienceIntermediate

ReefMax 31 mArea view

Opera House

Rottnest Island · WA

A sloping reef with a maze of caves and cavern lighting to 31 m, with reports of grey nurse sharks.

Deep/Advanced + experienceIntermediate

WreckMax 30 m

Gemini Wreck

Perth · WA

An upturned 36 m hopper barge in 30 m of often clear blue water, surrounded by schools of samson fish and kingfish.

Deep/Advanced + experienceAdvanced

WallMax 30 mArea view

Indicators (Canal Rocks)

Margaret River & Augusta · WA

Offshore walls and caves at 20-30 m off Canal Rocks, rich in fish and rarely dived.

Deep/Advanced + experienceAdvanced

ReefMax 30 m

West End Reefs

Rottnest Island · WA

Deep, current-swept spires and fissures at the far end of Rottnest with big fish, sharks and passing whales.

Deep/Advanced + experienceAdvanced

Cave/CavernMax 20 mShore

Cocklebiddy Cave

Nullarbor Caves · WA

A straight, gin-clear flooded tunnel over 6 km long – once the world's longest known underwater cave.

Cave/Cavern certificationExpert/Technical

Cave/CavernMax 20 mShore

Murra-El-Elevyn Cave

Nullarbor Caves · WA

Massive creamy-grey formations in a clear, relatively accessible Nullarbor cave – often the first dive of a Nullarbor…

Cave/Cavern certificationExpert/Technical

Cave/CavernMax 15 mShoreArea view

Olwolgin Cave

Nullarbor Caves · WA

Australia's longest known underwater cave – over 11 km of shallow phreatic passage on the Roe Plain.

Cave/Cavern certificationExpert/Technical

Aircraft WreckMax 14 m

Roebuck Bay Flying Boat Wrecks (deep-water Catalinas)

Broome & Kimberley · WA

WWII Catalina flying boats sunk in the 1942 Broome raid, with engines and turret still recognisable.

Advanced Open WaterExpert/Technical

ReefMax 10 m

Montgomery Reef

Broome & Kimberley · WA

The world's largest inshore reef, draining in waterfalls on a 10 m tide.

Snorkel/AnyExpert/Technical

WreckMax 10 mShore

Zuytdorp Wreck

Kalbarri & Shark Bay · WA

The 1712 VOC wreck at the foot of the Zuytdorp Cliffs, whose survivors may have been the first Europeans to live in…

Advanced Open WaterExpert/Technical

WreckMax 5 m

Calliance Wreck (Camden Harbour)

Broome & Kimberley · WA

A relic of the failed 1864 Camden Harbour settlement.

Snorkel/AnyExpert/Technical

Western Australia 2

Dunster Castle Wreck (Stokes Inlet) · Max 5 m · Esperance & Recherche Archipelago
Bremer Canyon (orca expeditions) · Depth not published · Albany & Great Southern