Sulawesi, Indonesia
    Bunaken

    Polytechnic Housereef

    Best months: Jan–May

    Protected Area

    Bunaken

    Why dive here

    With 238+ marine species recorded in the area - including blacktip reef sharks, giant moray eels, pygmy seahorses, seahorses and sperm whales - Polytechnic Housereef offers some of Sulawesi's richest reef diving. Water ranges 29-31°C, warmest June, October, November.

    Best timeJan–May
    WetsuitNo wetsuit needed, or a rash guard
    Marine lifeBlacktip Reef Sharks, Giant Moray Eels, Pygmy Seahorses, Seahorses and Sperm Whales · 238+ species recorded
    Water29-31°C · warmest June, October, November
    CharacterReef dive
    StandoutExceptional marine biodiversity

    The Polytechnic Housereef offers a straightforward dive right from the shore. You’ll find a sloping reef here, populated with a mix of hard and soft corals. It's a relaxed site, good for knocking off the rust or for those looking to take it easy. Expect to see the usual reef fish and perhaps some smaller critters if you look closely.

    Today05:2617:3112h 5m daylightGolden hour 17:04

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    Conditions

    Ocean conditions, forecast and tides for Polytechnic Housereef

    Polytechnic Housereef Ocean Conditions

    Monthly averages for Polytechnic Housereef, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (1.5, 124.75) (0km away)

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    October Averages

    Sea Temperature

    30°C

    87°F · Range: 29.6–31.2°C

    Current Speed

    1 cm/s

    Direction: W (270°)

    Chlorophyll-a

    0.099 mg/m³

    Very clear (oligotrophic)

    Salinity

    33.17 PSU

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

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