Raja Ampat, Indonesia
    TAMAN WISATA PERAIRAN KEPULAUAN RAJA AMPAT

    Cave Lagoon

    Best months: Dec–Apr

    Protected Area

    TAMAN WISATA PERAIRAN KEPULAUAN RAJA AMPAT

    Why dive here

    With 236+ marine species recorded in the area - including blacktip reef sharks, manta rays, mobula rays (devil rays), pygmy seahorses and sea turtles - Cave Lagoon offers some of Raja Ampat's richest cave diving. Water ranges 29-30°C, warmest May, November, December.

    Best timeDec–Apr
    WetsuitNo wetsuit needed, or a rash guard
    Marine lifeBlacktip Reef Sharks, Manta Rays, Mobula Rays (Devil Rays), Pygmy Seahorses and Sea Turtles · 236+ species recorded
    Water29-30°C · warmest May, November, December
    CharacterCave dive
    StandoutExceptional marine biodiversity

    Cave Lagoon in Raja Ampat offers a different kind of dive, perfect for those days when you're looking for something calmer than a ripping drift. We typically drop in around 10-15 meters, then follow the reef wall into the lagoon itself. The real appeal here is the mix of sun-dappled shallows and the more secluded cave entrances, where you might spot a Slender Snake Eel poking out or even a Pygmy seahorse clinging to a fan. It's a relaxed dive, usually minimal current, making it great for photographers or anyone wanting to linger with the Hayashi's Cardinalfish schooling in the darker corners. While it doesn't boast the big pelagics often seen elsewhere in Raja Ampat, we've had encounters with Olive Ridleys cruising through the lagoon, and there’s always a chance for a Manta. Keep an eye on the seagrass beds for dragonets and the giant clams.

    Safety Notes

    Overhead environment - never enter without proper cave/cavern training, redundant equipment, and a guideline.

    Strong currents typical this month (avg 35 cm/s). Good buoyancy control essential.

    Today06:0218:0912h 7m daylightGolden hour 17:41

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    Conditions

    Ocean conditions, forecast and tides for Cave Lagoon

    Cave Lagoon Ocean Conditions

    Monthly averages for Cave Lagoon, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-0.5, 130.6) (0km away)

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    October Averages

    Sea Temperature

    30°C

    86°F · Range: 29.2–30.9°C

    Current Speed

    34.71 cm/s

    Direction: NW (311.5°)

    Chlorophyll-a

    0.138 mg/m³

    Clear water

    Salinity

    34.33 PSU

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

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