

The Arch is a deep, structure-driven dive built around a natural rock arch, cave system, and wall that drops into the 30 to 35 metre range. Visibility swings considerably, anywhere from 4 to 30 metres depending on conditions, so timing your dive matters. A moderate current runs through regularly, and with surf and rip currents in play at the entry, this site demands solid buoyancy and water-reading skills before you commit. Grey Nurse Sharks and Eagle Rays work the deeper sections, while giant cuttlefish, Port Jackson sharks, slipper lobster, and bullrays occupy the shallower structure. Plan your bottom time carefully given the depth.
-34.60007, 150.90160
July through October delivers the most reliable visibility and your best shot at Grey Nurse Sharks. Check the surf report before you go, as a messy swell makes the entry significantly more committing.
For shore diving, park within Bass Point Reserve and walk to the rocky entry point. This entry is difficult and only for experienced divers in very calm seas. Alternatively, it is a much easier boat dive, with operators running trips from Shellharbour.
The shore entry and exit can be very hazardous and should only be attempted in extremely calm conditions. Strong currents are often present.
Depth
26-35m
Visibility
4-30m
Skill Level
Advanced
Entry
Shore & Boat
Water Temp
14-21°C
Current
Moderate
Typical Dive
40 min
Best Time
Jul, Aug, Sep, Oct
The Arch requires an Advanced Open Water certification as a minimum, though Open Water divers with sufficient experience may dive the site under appropriate supervision. The site reaches depths of 30 to 35 metres and features moderate currents, making advanced training essential for safe navigation. Located in Shellharbour, New South Wales, this site is classified as an advanced dive due to its depth and challenging conditions.
The Arch is home to Grey Nurse Sharks, Eagle Rays, and bullrays, along with Port Jackson sharks that frequent the area. Divers regularly encounter giant cuttlefish and slipper lobster amongst the rocky structures. The diverse species mix makes this one of New South Wales' premier advanced dive sites for pelagic and reef encounters.
The optimal diving months at The Arch are July through October, when conditions are most favourable. Water temperatures during this period range from 14 to 21 degrees Celsius, with visibility improving to between 4 and 30 metres depending on ocean conditions. Winter and early spring offer the best combination of marine life activity and water clarity at this Shellharbour site.
The Arch is accessible by both shore entry and boat, giving divers flexibility in how they approach the site. Shore access is available from the Shellharbour coastline, though divers should be prepared for surf entry conditions and potential rip currents. Parking and toilet facilities are available near the shore entry point.
The Arch sits at depths between 30 and 35 metres, making it strictly an advanced dive. The depth combined with moderate currents requires proper training, gas management skills, and decompression planning. This New South Wales site demands respect for its depth profile and environmental conditions.
The Arch presents multiple hazards including strong currents, surf conditions, rip currents, and significant depth reaching 35 metres. Divers must be competent in managing current dives and executing safe entries through surf zones. The combination of depth and current makes this an advanced site requiring careful dive planning and experience.
The Arch has no entry fee, making it a freely accessible dive site for qualified advanced divers. Basic facilities including parking and toilets are provided at the shore access point in Shellharbour. Divers only need to cover their own equipment and air fill costs.
The Arch in Shellharbour requires advanced diving skills. Expect deeper depths, currents, or challenging conditions that are not suitable for newly certified divers.
A 7mm wetsuit or semi-dry is recommended for diving at The Arch in Shellharbour. Water temperatures range from 14°C to 21°C.
The Arch in Shellharbour has depths ranging from 26 metres to 35 metres.
A typical dive at The Arch in Shellharbour lasts approximately 40 minutes. Actual dive time depends on depth, air consumption, and conditions.