Rock Islands, Palau
    Ngemelachel-Ngederrak Seagrass Beds

    Lighthouse Channel

    Best months: Nov–Mar

    Protected Area

    Ngemelachel-Ngederrak Seagrass Beds

    Why dive here

    With 182+ marine species recorded in the area - including barracuda, lionfish, mandarin fish, napoleon wrasse and nautiluses - Lighthouse Channel offers some of Rock Islands's richest drift diving. Water ranges 29-30°C, warmest June, October, November.

    Best timeNov–Mar
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBarracuda, Lionfish, Mandarin Fish, Napoleon Wrasse and Nautiluses · 182+ species recorded
    Water29-30°C · warmest June, October, November
    CharacterDrift dive
    StandoutExceptional marine biodiversity

    Lighthouse Channel often gets overlooked in the clamour for Palau’s big drift dives, but we think that’s a mistake. It’s a quieter, shallower dive, perfect for a long bottom time, letting you really slow down and appreciate the details. We love it when the tide is heading out, pushing warmer lagoon water into the channel. That's when you see the small stuff truly come alive. The channel itself is a sheltered cut, with sunlight dappling through the overhangs. Look closely at the walls and you’ll find a riot of tiny organisms. Bluespotted Shrimpgobies share their burrows with shrimp, and if you’re patient, you might spot an Adorned Dwarfgoby darting between corals. We’ve spent whole dives just combing the reef for these micro-critters. Our favourite is watching the New Guinean Anglerfish, perfectly camouflaged, waiting for an unsuspecting meal. It’s a macro photographer’s dream, or just a beautiful spot to unwind after a drift. Keep an eye out for the occasional school of Golden Trevally cruising through. It’s not a high-octane dive, more of a peaceful exploration, but genuinely rewarding for those who appreciate the smaller things.

    Safety Notes

    Drift dive - carry a surface marker buoy (SMB) and stay with your group. Brief the current direction before entry.

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    Conditions

    Ocean conditions, forecast and tides for Lighthouse Channel

    Lighthouse Channel Ocean Conditions

    Monthly averages for Lighthouse Channel, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (7.2, 134.3) (4km away)

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    October Averages

    Sea Temperature

    30°C

    86°F · Range: 28.5–31.2°C

    Current Speed

    10.05 cm/s

    Direction: N (5.7°)

    Chlorophyll-a

    0.026 mg/m³

    Very clear (oligotrophic)

    Salinity

    33.62 PSU

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

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