15-35m
    Goat Island & Hauraki Gulf, New Zealand
    Wharekawa Harbour Wildlife Refuge

    Aldermens- Fish Factory

    Best months: Jan–Apr

    Protected Area

    Wharekawa Harbour Wildlife Refuge

    Why dive here

    With 72+ marine species recorded in the area - including blue sharks, dolphins, hammerhead sharks, humpback whales and seahorses - Aldermens- Fish Factory offers some of Goat Island & Hauraki Gulf's richest wall diving. Water ranges 15-21°C, warmest January, February, March.

    Best timeJan–Apr
    WetsuitA 5mm wetsuit
    Marine lifeBlue Sharks, Dolphins, Hammerhead Sharks, Humpback Whales and Seahorses · 72+ species recorded
    Water15-21°C · warmest January, February, March
    CharacterWall dive · max 15-35m
    StandoutRich in charismatic marine life

    The Aldermens, and the Fish Factory site in particular, are a bit of a commitment to reach from Goat Island, but we think it’s absolutely worth the boat ride. Once you’re in, it’s a site that keeps your attention. You drop onto a wall that feels like it just keeps going, then a separate pinnacle rises up from the depths, forming a playground of ledges and overhangs. This is a site for divers who appreciate the subtle details and are comfortable with a bit of depth. We love drifting along the wall, keeping an eye out for the New Zealand Draughtboard Sharks tucked into crevices. The currents here can push you along nicely, but they also bring in the bigger stuff – we’ve seen Shortfin Makos here, though you have to be lucky and quick to spot them. Our favourite part is definitely the pinnacle; the pink maomao schooling there are just beautiful, and the way the light filters through them is something special. Keep an eye on your depth here, it’s easy to get distracted and go a bit deeper than planned as you explore.

    Typical Aldermens- Fish Factory Dive Profile

    5m10m15mSafety Stop0m15m max~50 min estimated bottom time

    Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.

    Safety Notes

    Always perform a 3-minute safety stop at 5m before surfacing.

    Today05:3918:2812h 49m daylightGolden hour 17:54

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    Conditions

    Ocean conditions, forecast and tides for Aldermens- Fish Factory

    Aldermens- Fish Factory Ocean Conditions

    Monthly averages for Aldermens- Fish Factory, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-36.93, 175.86) (22km away)

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    October Averages

    Sea Temperature

    16°C

    60°F · Range: 14.5–16.9°C

    Current Speed

    1.41 cm/s

    Direction: SE (135°)

    Chlorophyll-a

    0.497 mg/m³

    Moderate productivity

    Salinity

    34.91 PSU

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)

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