Recent Byron dive-report context for visibility and current variability.
Julian Rocks - Cod Hole
Advanced Julian Rocks cave site with winter grey nurse sharks.
About Julian Rocks - Cod Hole
Julian Rocks - Cod Hole is an advanced Julian Rocks dive on the northern side of Nguthungulli where a small cave and overhang system cuts into rock at moderate depth and attracts some of the site's biggest winter wildlife encounters. The draw is not wide-open reef cruising but a compact high-interest feature dive. Divers work around the cave mouth and surrounding rock for grey nurse sharks in season, large moray eels, wobbegongs, rays, and passing pelagic fish, while managing the site with the extra care that overhead structure and exposed current demand.
Research Estimate At Julian Rocks - Cod Hole
Conservative baseline from public research. No community dives logged yet.
Where Is Julian Rocks - Cod Hole?
Julian Rocks - Cod Hole Planning Details
Depth range, seasonality, and planning context.
Reported Depth
15m - 21m
Depth Note
Cave opening is approximately 15 m deep and slopes down to about 21 m.
Best Season
Winter
Typical Conditions
Expect blue-water ocean conditions, rocky structure, and movement that can shift quickly with swell and tidal flow rather than the steadier feel of a sheltered bay site.
Safety & Access At Julian Rocks - Cod Hole
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
Includes an overhead environment and the presence of sharks; appropriate training and situational awareness are important.
Access Restrictions
Access is by licensed boat operator from Byron Bay, with site choice dependent on swell, current, and marine reserve conditions at Julian Rocks.
Legal Notes
Julian Rocks sits inside Nguthungulli Julian Rocks Nature Reserve and Cape Byron Marine Park, where divers must follow protected-area rules and avoid disturbing grey nurse sharks or other protected marine life.
Local Intel For Julian Rocks - Cod Hole
Community notes to help plan your visit.
Scuba
An experienced-diver site featuring a small cave starting around 15 m and descending to about 21 m.
Freedive
Not a typical freedive site. The cave feature, boat-only access, and often energetic conditions make Cod Hole far better suited to experienced scuba divers.
Snorkel
Unsuitable for routine snorkeling because the feature sits at scuba depth and the site is managed for advanced boat diving rather than easy surface access.
Julian Rocks - Cod Hole Dive Conditions Planner
Use the planner to scan this week, inspect today in local time, and understand how exposure shapes conditions at Julian Rocks - Cod Hole.
Exposure Profile at Julian Rocks - Cod Hole
Directional shelter context for incoming swell.
Wildlife at Julian Rocks - Cod Hole
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Julian Rocks - Cod Hole
Community dive logs and visit reports for this site.
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Dive Spot Log Averages At Julian Rocks - Cod Hole
Average conditions based on logged dives & visits.
Julian Rocks - Cod Hole Guide - Frequently Asked Questions
Planning answers for access, conditions, timing, and site logistics.
Julian Rocks - Cod Hole Guide - Sources and Updates
Last Updated
Research Sources
Operator guidance on Julian Rocks conditions, wildlife, and site character.
Independent Julian Rocks overview with wildlife and reserve context.
Protected-area context for Nguthungulli Julian Rocks.
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