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.
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
CoralHealthy coral
Aquatic LifeExceptional variety
FacilitiesBasic facilities
Crowd / PopularityQuite busy
CurrentModerate current
Where Is Middle Arch?
This spotNearby spotsExplore nearby spots on the map
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
Site conditions, restrictions, and access requirements.
Site Conditions
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 Diving
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.
Freediving
Not a freedive target; the depth and overhead cave make scuba the right fit.
Snorkeling
Not a snorkel target; the arch and cave are better experienced underwater with scuba.
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.
Dive Spot Log Averages At Middle Arch
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility17m
Activity
No dive activity logged yet.
