Apo Reef, Philippines

    Cobrador Sunken Island

    Best months: Oct–Feb

    Why dive here

    With 176+ marine species recorded in the area - including giant moray eels, sea turtles, sperm whales, lionfish and pufferfish - Cobrador Sunken Island offers some of Apo Reef's richest wreck diving. Water ranges 28-30°C, warmest May, June, July.

    Best timeOct–Feb
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeGiant Moray Eels, Sea Turtles, Sperm Whales, Lionfish and Pufferfish · 176+ species recorded
    Water28-30°C · warmest May, June, July
    CharacterWreck dive
    StandoutExceptional marine biodiversity

    Cobrador Sunken Island isn't really an island at all, more a submerged plateau with a fascinating secret. This isn't your typical wreck dive with a clearly defined ship. Instead, we’re talking about a former lighthouse station, a concrete structure that toppled into the depths during a typhoon decades ago. It's a jumble of concrete blocks, twisted rebar, and scattered debris now heavily encrusted and completely reclaimed by the sea. You'll find yourself navigating through swim-throughs formed by fallen slabs, peering into shadowy crevices where nurse sharks often snooze. Schools of bigeye trevally swirl around the structure’s perimeter, their silver scales catching the light. We love exploring the nooks and crannies here, especially looking for the moray eels that seem to have taken up residence in every available pipe and crack. It's a great spot for macro too, so bring your keen eye for nudibranchs and flatworms camouflaged against the encrusting corals. The visibility is usually excellent, allowing you to appreciate the sheer scale of the collapse and the new ecosystem it has fostered.

    Safety Notes

    Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.

    Today05:4117:3611h 55m daylightGolden hour 17:08

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    Conditions

    Ocean conditions, forecast and tides for Cobrador Sunken Island

    Cobrador Sunken Island Ocean Conditions

    Monthly averages for Cobrador Sunken Island, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (12.33, 121.06) (26km away)

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    October Averages

    Sea Temperature

    30°C

    86°F · Range: 28.1–31.3°C

    Current Speed

    3.16 cm/s

    Direction: E (108.4°)

    Chlorophyll-a

    0.049 mg/m³

    Very clear (oligotrophic)

    Salinity

    32.63 PSU

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

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