Mary’s Wall
Protected Area
Poor Knights Islands
Why dive here
With 79+ marine species recorded in the area - including blue sharks, dolphins, hammerhead sharks, humpback whales and orcas - Mary’s Wall offers some of Poor Knights Islands's richest reef diving. Water ranges 15-22°C, warmest January, February, March.
Mary’s Wall at the Poor Knights is one of those places that, on paper, sounds like a side-show. A "short wall," the data says. But dismiss it at your peril; we think it’s a brilliant little spot if you know how to dive it. Swim out from the main island, away from the usual crowds, and you’ll find it. The wall itself might not be endless, but it’s absolutely coated in those vibrant gorgonian fans, an anemone garden, and a riot of encrusting life. Our tip? Get in close and slow. This isn't a site for zooming past. We love spending time here just letting our eyes adjust to the details. Look for the nudibranchs tucked into every crevice, little flashes of colour against the deeper hues of the fans. Down at the base, you're almost guaranteed to spot a scorpionfish, perfectly camouflaged, just waiting for a meal to drift by. We’ve also seen Southern Eagle Rays cruising the deeper sections, a real treat if you catch one. This site really suits divers who appreciate macro life and aren’t afraid to take their time exploring a smaller area deeply.
Nearest Dive Centres to Mary’s Wall
Dive shops near Mary’s Wall
Dive! Tutukaka
Moana Futures Ltd
Northland Dive
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Reviews for Mary’s Wall
Conditions
Ocean conditions, forecast and tides for Mary’s Wall
Mary’s Wall Ocean Conditions
Monthly averages for Mary’s Wall, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-35.84, 174.61) (14km away)
October Averages
Sea Temperature
16°C
60°F · Range: 14.8–17.1°C
Current Speed
11.4 cm/s
Direction: SE (142.1°)
Chlorophyll-a
0.388 mg/m³
Moderate productivity
Salinity
35.44 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
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