Dive Site: Julian Rocks

About Julian Rocks

Julian Rocks, known as Nguthungulli by the local Bundjalung people, is a prominent marine reserve located approximately 2.5–3 km off the coast of Byron Bay, Australia. This world-class dive site is exceptional due to its position within the Cape Byron Marine Park, where the warm East Australian Current converges with cooler southern waters. This creates an unparalleled biodiversity, allowing for a mix of species typically found in both tropical and temperate zones, often likened to a 'mini Galapagos'. The topography features two distinct diving areas. The sheltered south side, with depths of 8–14 meters, is ideal for Open Water divers, hosting numerous leopard sharks and green turtles. The north side, dropping to 24 meters, experiences stronger currents and attracts larger pelagics such as grey nurse sharks and eagle rays. The site boasts excellent visibility, typically ranging from 10 to 20 meters, though it can be affected by storm swells and heavy summer rains. Marine life is abundant year-round, with seasonal highlights adding to the allure. From December to May, the area is renowned for its large aggregations of leopard sharks and frequent sightings of manta rays. Cooler winter months, from May to October, bring aggregations of critically endangered grey nurse sharks. Resident green turtles, wobbegong sharks, and a diverse array of reef fish and invertebrates are consistently present, making every dive a unique encounter. Diving at Julian Rocks offers accessible experiences for all skill levels, with various mooring points catering to different conditions and dive plans. Operators typically offer single or double-tank trips, often combining both the shallower, calmer south side and the deeper, more dynamic north side to showcase the full spectrum of its marine wonders.

Dive site facts: Julian Rocks

Depth

5–24 m

Typical dive

8–14 m (south side), 18–22 m (north side), 50–60 min

Current

Mild–Moderate

Visibility

10–20 m

Water temperature

18–27°C

Entry

Tender / Negative entry (current dependent)

Level

Open Water+

Dive type

Reef, pelagic, shark encounters

Night dive

Possible (check operator schedules)

Region / port

Byron Bay, New South Wales

Coordinates

-28.6417, 153.625

Conditions & Currents

Currents at Julian Rocks range from mild to moderate, influenced significantly by the East Australian Current. The south side typically experiences milder currents, making it suitable for less experienced divers. However, the north side, with its deeper channels, can have stronger tidal flows, especially during certain moon phases. Divers should be prepared for drift dives and be proficient in current management, as conditions can change. Visibility is generally very good, often between 10 to 20 meters, but heavy rain or significant swells can temporarily reduce it. Entry is usually via tender from the main boat, and strong currents may necessitate negative entries to quickly descend to the reef. Dive plans are often adjusted on-site to match prevailing current conditions, ensuring a safe and enjoyable experience for all divers.

Marine life & sighting chances

Leopard Shark

December–May · common

Green Sea Turtle

Year-round · common

Grey Nurse Shark

May–October · common

Reef Manta Ray

March–June · occasional

Loggerhead Turtle

Year-round · occasional

Wobbegong Shark

Year-round · common

Eagle Ray

Year-round · common

Eastern Blue Groper

Year-round · common

Octopus

Year-round · common

Nudibranch

Year-round · common

Humpback Whale

June–November · occasional

Bull Shark

Occasional · rare

Dive profile & how the dive runs

A typical dive at Julian Rocks often begins with a boat transfer from Byron Bay or Brunswick Heads, followed by a tender entry to one of the several mooring sites. Many dives commence at a western mooring like 'Nursery' on the more sheltered south side, which maintains depths between 8–14 meters. Divers often explore the sandy gutters and bommies here, observing leopard sharks and turtles. The dive then progresses, often drifting with the current, towards the northern side of the rocks. Here, depths increase to 18–22 meters, with sites like 'Cod Hole' attracting grey nurse sharks during winter months. The dive concludes by ascending towards another mooring on either the north or south side, where the safety stop is performed, before returning to the boat.

Underwater photography

Julian Rocks offers exceptional photographic opportunities for both wide-angle and macro enthusiasts, given its unique blend of species. For wide-angle, the large aggregations of leopard sharks and grey nurse sharks, along with manta rays (seasonally), provide excellent subjects. A fisheye or wide-angle rectilinear lens is ideal for capturing these larger animals and the vibrant reefscapes. For macro photography, the site is rich with nudibranchs, crustaceans, and various reef fish; a macro lens will be invaluable. Ensure good buoyancy control, especially on the north side where currents can be stronger, to avoid stirring up sediment and disturbing marine life. Given the presence of critically endangered species like grey nurse sharks, avoid flash photography and maintain a respectful distance (minimum 3 meters) to minimize disturbance. Natural light photography is often sufficient in the good visibility conditions.

Combine with nearby dive sites

• North Solitary Island

  North Solitary Island, located within the protected Solitary Islands Marine Park off the coast of New South Wales, Australia, represents a…

• South Solitary Island

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• Fish Rock Cave

  Fish Rock Cave, located off South West Rocks in New South Wales, Australia, is renowned as the country's only true ocean cave dive.

• Wolf Rock

  Wolf Rock is a spectacular dive site located just 2 kilometers off Double Island Point, near Rainbow Beach, Queensland, and marks the last…

Getting there & logistics

Julian Rocks is exclusively accessible by boat from Byron Bay or Brunswick Heads. Commercial dive operators, such as Sundive and Byron Bay Dive Centre from Byron Bay, and Blue Bay Divers from Brunswick Heads, offer daily trips. Sundive and Byron Bay Dive Centre typically run single-tank dives using rigid inflatable vessels launched directly from the beach, with divers transferred by bus. Blue Bay Divers, operating from Brunswick Heads, provides more comfortable double-tank trips on larger vessels. Travelers from Brisbane may find Brunswick Heads more convenient due to reduced driving time. Trip durations vary, usually half a day for single dives. It's advisable to book in advance, especially during peak seasons, and verify sea conditions, as bar crossings or beach launches require reasonably calm waters. There are no additional park fees beyond the dive trip cost.

Safety & environment

Diving at Julian Rocks is generally considered safe for certified divers, but awareness of conditions and adherence to marine park regulations are crucial. The nearest recompression chamber is located in Brisbane, approximately two hours' drive away, highlighting the importance of dive insurance that covers emergency evacuation and medical treatment. All divers must maintain a minimum distance from marine life, particularly protected species like grey nurse sharks (3 meters, no flash photography) and turtles (2 meters, no obstruction of movement), and touching marine life is strictly prohibited. Stronger currents on the north side necessitate good buoyancy control and current diving experience. Always follow your dive guide's instructions and conduct. Ensure all equipment is in good working order and carry an SMB for surface signaling.

Who it suits — and who it doesn't

FAQ

Julian Rocks FAQ

Liveaboards diving Julian Rocks

These liveaboards may visit Julian Rocks on selected itineraries — the exact dive sites depend on departure, weather and conditions.

Spoilsport

Australia

28 guests30 m

$406/day

Odyssey Liveaboard

Australia

20 guests24 m

$392/day