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Sydney Northern Beaches

Bongin Bongin Bay (Mona Vale Basin)

A headland-sheltered sandy bay with seagrass seahorses, sea dragons on the kelp edge and an easy beach entry – Mona Vale's…

ShoreUp to 15 m

Boat (day trip)Up to 25 m

East Arnhem Land & Gove

Bonner Rocks

A pristine rocky coral reef with an old trawler wreck that draws gropers, barracuda, cobia and tuna.

Boat (day trip)Up to 20 m

Far Northern Reef & Torres Strait

Boulder Reef (Cooktown)

Almost undived reefs off Australia's closest mainland port to the Great Barrier Reef.

Boat (multi-day/liveaboard)Up to 25 m

Lady Musgrave & Bunker Group

Boult Reef

Remote northern Bunker reef with bommies, ledges and caves visited by Maori wrasse, nurse sharks and mantas.

Jervis Bay

Bowen Island Multilevel

A wall-and-slope profile for every level, with a chance of sunfish at cleaning stations.

BoatUp to 30 m

Boat (multi-day/liveaboard)Up to 30 m

Townsville & Magnetic Island

Bowl Reef

Gorgonian fans and sea whips on the drop-offs, caves, eagle rays and a good night dive in the shallows.

Eden & Green Cape

Boyds Tower Reef

Reef below the 1847 Boyd's Tower on Red Point, next to the Eden tug wrecks.

BoatDepth not recorded

Sydney Harbour

Bradleys Head (shore reef)

Kelp reef under the HMAS Sydney mast at the pivot of the harbour's shipping channel – the shore gateway to the Currajong and…

ShoreUp to 12 m

Mackay

Brampton Island

Former resort island with sheltered beaches and shallow fringing reef for snorkelling in the Cumberland Islands National Park.

BoatUp to 8 m

Shore or BoatDepth not recorded

Sunshine Coast

Brays Rock

A Caloundra rock reef favoured by spearfishers, with basic diving along the reef towards Kings Beach.

Boat (day trip)Up to 40 m

Wall

Albany & Great Southern

Breaksea Island Southern Dropoff

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

Albany & Great Southern

Bremer Bay – Fishery Beach & Glasse Island

Granite coves and islands around Bremer Bay's entrance with sponge gardens, seadragons and sea lions.

Shore or BoatUp to 20 m

Jetty/Pier

Adelaide Metro

Brighton Jetty

A convenient shallow snorkel beside Adelaide's rebuilt 1886 jetty on a flat day.

ShoreUp to 5 m

TAS

Wreck

King Island

British Admiral

Site of an 1874 wreck in which 79 of 88 aboard died; a memorial headstone stands on the beach.

BoatDepth not recorded

Boat (multi-day/liveaboard)Up to 25 m

Townsville & Magnetic Island

Broadhurst Reef

Pinnacles and crevices densely covered in hard and soft corals with abundant fish.

Tweed & Byron Bay

Broken Head reefs

A rarely dived inshore reef inside a protected coastal nature reserve south of Byron Bay — solitude on the rare flat day.

Shore or BoatUp to 16 m

Boat (day trip)Up to 35 m

East Arnhem Land & Gove

Bromby Islands

Sheltered coral gardens on one side and a steep seaward wall of gorgonians and black coral on the other, patrolled by mantas,…

Boat (day trip)Up to 15 m

Heron Island & Capricorn Group

Bromfield Reef

The shallow coral-garden second dive on Heron's Sykes Reef trips, rarely visited and undisturbed.

Sydney South & Botany Bay

Bronte (Bronte-Coogee Aquatic Reserve)

Quiet kelp and reef at the northern end of the Bronte-Coogee Aquatic Reserve beside the historic Bronte Baths.

ShoreUp to 10 m

Wreck

Eyre Peninsula

Bronzewing Tug Wreck

A 1930 ex-Navy tug scuttled in 1990 in shallow, sheltered Boston Bay – an easy close-to-town wreck.

BoatUp to 7 m

TAS

Tasman Peninsula

Brothers and Sisters Rocks (Wedge Bay)

Easy, sheltered shore dive from a pebbly beach at the head of Wedge Bay.

ShoreUp to 17 m

Port Stephens

Broughton Island – Providence, Esmeralda Cove & Coal Shaft Bay

Broughton Island's sheltered, camping-permitted southern and western bays — a scenic, calm-water complement to the island's…

BoatUp to 15 m

Boat (multi-day/liveaboard)Up to 25 m

Broome & Kimberley

Browse Island

WA's most remote island, ringed by reef and guano-era shipwrecks.

Ulladulla

Brush Island

Quiet island reef at the northern tip of Batemans Marine Park, with grey nurse shark habitat and the Northern Firth wreck…

BoatUp to 25 m