The best scuba diving spots in Sydney

From the biodiversity at Shelly Beach to shipwrecks off the Northern Beaches coastline, there is plenty to explore underwater in Sydney. Here is some of the best scuba diving in Sydney.

Deborah Dickson-Smith

Dive Expert Deborah Dickson-Smith

Mar 2024 -
min read

Shelly Beach

Manly’s Shelly Beach is actually two dive sites, with the left-hand side of the bay usually referred to as Shelly, while the right-hand side  which has an additional entry point halfway along ‘The Bower’ pathway  is called Fairy Bower. Being within the sheltered confines of Cabbage Tree Bay Aquatic Reserve, they are teeming with marine life, and suitable for either a day or night dive. It is also a great place to learn how to dive.

Depending on the time of year, you’re bound to run into giant cuttlefish, Port Jackson sharks, wobbegongs, sting rays of various descriptions, and seriously large schools of juvenile fish. You will always be accompanied by a friendly eastern blue groper – the marine symbol for New South Wales, who follows you around on your dive like a puppy.

You could dive here dozens of times and never cross the same path, yet still encounter more than 160 species of fish and rays. And you never know who’s coming to visit. One week it might be a turtle, a seal or a dolphin; next week it could be dusky whaler sharks. Divers have even been lucky enough to see a large fever of cow-nose rays on occasion. Follow the shoreline east from the beach around the heads and spot weedy sea dragons in the kelp forests... look out for the motorbike on the way back.

Port Jackson sharks at Shelly Beach, Northern Beaches. Image Credit: Pete McGee

Port Jackson sharks at Shelly Beach, Northern Beaches - Credit: Pete McGee

Apartments, Long Reef

The Apartments dive site is located off the coast of Long Reef, on Sydney’s Northern Beaches, and is so named for the formation of large rectangular boulders found here. The site is located at the edge of a rocky plateau with a drop-off or wall that features many caves and swim throughs, which give small and large sea life safe areas to shelter when large predators cruise through looking for lunch.

This is one of three dive sites near Sydney where grey nurse sharks congregate. The valley is usually filled with thousands of southern pomfrets, in schools of fish so dense they form a shadow over the dive site. The pomfrets part as you swim through, often revealing dozens of grey nurse sharks  a magnificent sight to behold.

On the far northern side at a depth of around 21m is the entrance to the ‘Cathedral’, a cavern formed by two enormous sandstone blocks resting against each other in the shape of a church's roof. Entering from the southern side, you swim through a cavity towards the ‘altar’ before exiting via the ‘stained glass window’.

Grey Nurse Shark at The Apartments dive site, Northern Beaches. Image Credit: Jayne Jenkins

Grey nurse shark at The Apartments dive site in Long Reef, Northern Beaches - Credit: Jayne Jenkins

Valiant Shipwreck, Palm Beach

The wreck of the Valiant is located 1.4km to the east of the northernmost point of Barrenjoey Headland, in Palm Beach  the northernmost point of Sydney’s Northern Beaches Peninsula. This old tugboat is perched at a depth of 27m, sitting more or less upright with a slight list to port, and some mystery surrounds how it got to its final resting point.

The wreck is covered in colourful encrusting corals and sponges, which attract large numbers of fish species. Marine life on the wreck includes yellowtail, white ear, bream, mado, stripey, black-tipped bullseye, common bullseye, sergeant baker and the occasional yellowtail kingfish.

Due to its depth, it is advisable to spend only 25 minutes exploring the wreck. But this is plenty of time to see the whole site as it only covers an area of about 156 square metres. The engine room, cabins, crew quarters and bridge are accessible and well worth examining.

Valiant Shipwreck, Palm Beach. Image Credit: Nays Baghai

Valiant Shipwreck, Palm Beach - Credit: Nays Baghai

Clifton Gardens

In the soft silt of Chowder Bay  accessed from shore at Mosman’s Clifton Gardens recreational park  you’ll find several species of frog fish, seahorses, pipefish, octopus, squid, blennies, moray eels, mantis shrimp, nudibranch and the site’s signature species: decorator crabs.  

These tiny critters are much sought after by macro-wildlife photographers, who travel great distances to find prize-winning underwater macro life like this; many visit remote locations such as the Lembeh Strait in Indonesia’s North Sulawesi, or Papua New Guinea’s Milne Bay to capture them on camera. This type of diving was coined 'muck-diving' by underwater photography pioneer Bob Halstead, because of the silty, drab habitat these prized critters are usually found in.

The nets around the Clifton Gardens swimming enclosure are home to several species of seahorses, including the endangered White’s (or Sydney) seahorse, endemic to Sydney Harbour. The local population was boosted recently by 90 aquarium-bred juveniles and the installation of ‘Seahorse Hotels’: wire cages that provide a sheltered habitat to prop up the population of this endangered species.

The site can be accessed from the end of the jetty, which runs alongside the shark-netted swimming area; it can also be accessed from the beach and through the swimming area itself. Be sure to spend plenty of time exploring the net and pylons looking for seahorses and decorator crabs, and swim out toward the buoy and the rubble of an old wreck where you’ll find blennies, pipe fish, moray eels, octopus and flying gurnards.

Endangered White’s (or Sydney) seahorse in Clifton Gardens, Chowder Bay. Image Credit: Jayne Jenkins

Endangered white’s (or Sydney) seahorse, endemic to Sydney Harbour at Clifton Gardens, Chowder Bay - Credit: Jayne Jenkins

Bare Island

Bare Island is one of the prettiest dive sites in Sydney, with vibrant and diverse sponge gardens populated by lots of delicate creatures such as pygmy pipefish, nudibranchs, sea stars and seahorses.

It’s also one of the few dive sites in Sydney for reliable sightings of the curious red Indian fish, so named for their shape, which resembles the headdress of Indigenous North Americans.

There are two dives here: Left Side, which is better, but a bit tricky in even a mild southerly swell; and Right Side, which is where you dive when there’s a bigger southerly swell. The max depth is about 12m, but you’ll see the most interesting stuff at a 7m depth profile.

To access the site, it’s an easy 200m walk from the La Perouse carpark down and across the bridge to the island, with access to a flat rock platform a few steps down at the end of the bridge.

Bare Island Sponge Garden. Image Credit: Pete McGee Photography

Bare Island Sponge Garden - Credit: Pete McGee Photography


There are two dive sites at Kurnell: Monument and The Steps. Both are relatively easy dives. Monument faces northwest and is essentially a drift along the beachside. Meanwhile, The Steps faces northeast and is more exposed to tidal flow in and out of the bay.

The Steps is sometimes referred to as ‘The Home of the Weedy Sea dragon’, as it’s usually easy to find a few of these critters here  for those with keen eyesight, you'll also spot several resident pygmy pipefish. As it’s a shallow dive, there is plenty of light and it’s an amazingly colourful dive.

Depending on the tide, head east or west. East will take you past kelp and a plethora of weedy sea dragons; while the west takes you past a large stand of kelp, over a collection of boulders, and between a number of nice swim-throughs revealing a diversity of aquatic life. Eventually, the wall becomes steeper and more defined as you move toward the boundaries of the Monument dive site.

Access to these sites within Botany Bay National Park to the south of Sydney is from the carpark, down a winding staircase about 15m to the entry point on a flat rock platform.

Weedy sea dragon in Kurnell, South Sydney

Weedy sea dragon in Kurnell, South Sydney

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