rmarine.nz · Operator
Poor Knights site list mentioning Middle Arch.
Dive Spot Guide•
Middle Arch
A large arch and cave dive in the Poor Knights.
ScubaBoat EntryAdvanced
CavePinnacleReef
Boat-accessed arch with steep slopes, an air-pocket cave, and an advanced profile that suits experienced divers in calm conditions.
About Middle Arch
A large arch with steep slopes and a cave-air-pocket feature, making it one of the more serious Poor Knights dives. The arch itself is the easy read, but the loop and deeper sides reward calm water, a disciplined trim, and confidence around current. The route feels best when the diver stays conservative, reads the water before committing to the loop, and uses the arch as the visual anchor for the whole dive.
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Research Estimate At Middle Arch
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 17m
AccessModerate entry effort
Coral HealthHealthy coral
Marine LifeExceptional variety
FacilitiesBasic facilities
CrowdedQuite busy
Current StrengthModerate current
Where Is Middle Arch?
This spotNearby spots
Community sourced coordinates.
Middle Arch Planning Details
Depth range, seasonality, and planning context.
Reported Depth
18m - 30m
Depth Note
Arch bottom is around 18 m, with slopes to 30 m+ on both sides and a cave with an air pocket near the southwestern entrance.
Best Season
Summer, when the site's conditions are typically most forgiving.
Typical Conditions
Average conditions, be alert; the loop is best when currents are absent and the water is settled.
Safety & Access At Middle Arch
Hazards, restrictions, and access requirements.
Key Hazards
Overhead environment
Safety Notes
Use overhead-environment precautions near the cave with an air pocket; keep buoyancy tight and do not force the loop when current is up.
Access Restrictions
Boat access only through a reserve-compliant Poor Knights operator.
Legal Notes
Poor Knights marine reserve rules apply, including no landing, no fishing, and no careless anchoring.
Local Intel For Middle Arch
Community notes to help plan your visit.
Scuba
The arch is an advanced route: follow the slopes, keep an eye on the cave entrance, and stay conservative if the water is not settled.
Freedive
Not a freedive target; the depth and overhead cave make scuba the right fit.
Snorkel
Not a snorkel target; the arch and cave are better experienced underwater with scuba.
Middle Arch Dive Conditions Planner
Use the planner to scan this week, inspect today in local time, and understand how exposure shapes conditions at Middle Arch.
Current Snapshot
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🌥️Variable
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Surface / Entry
Wind No data · Tide No data
Sea State
Swell No data · Period unavailable
Visibility Outlook
Rain chance No data
Wind
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Exposure Profile at Middle Arch
Directional shelter context for incoming swell.
Exposure Note
Hourly forecast data is not available yet.
Wildlife at Middle Arch
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Middle Arch
Community dive logs and visit reports for this site.
No Dive Logs Yet
Be the first to log a dive at this spot and share your experience!
Dive Spot Log Averages At Middle Arch
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility17m
Activity
No dive activity logged yet.
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Middle Arch Guide - Frequently Asked Questions
Planning answers for access, conditions, timing, and site logistics.
Middle Arch Guide - Sources and Updates
Last Updated
Research Sources
www.doc.govt.nz · Official
Reserve rules and access context.
xray-mag.com · Community
Macrolife and gorgonian coverage on Middle Arch.
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