Apo Reef, Philippines

    Akitsushima

    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 - Akitsushima 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

    The Akitsushima wreck at Apo Reef is one of our absolute favourites in the Philippines. This isn't just a sunken boat; it's a hulking piece of history, a Japanese seaplane tender from WWII, now resting on its port side, stern-up, at around 36 metres. We love dropping down and seeing that massive crane arm, still intact, reaching out into the blue, a silent testament to its past life. You'll find schools of big-eye trevally swirling around the superstructure, their silver scales flashing in the ambient light filtering down. Inside, if you're comfortable with penetration, the crew quarters offer some interesting swim-throughs, but it's the external details that really grab us – the machine guns still mounted, encrusted in corals, and the way pufferfish and angelfish have made the metal their home. For experienced wreck divers, this is a phenomenal site, offering both historical intrigue and vibrant reef life. We’d suggest diving it on an early morning tide for the best visibility before the currents pick up.

    Safety Notes

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

    Today05:5017:4511h 55m daylightGolden hour 17:17

    Akitsushima Wreck History

    Year Sunk

    1944

    Vessel Type

    warship

    Cause

    fire

    Tonnage

    4,720 tons displacement

    The IJN Akitsushima was a unique vessel in the Imperial Japanese Navy fleet. Commissioned in 1942, she was a seaplane tender specifically designed to carry and service the massive H8K 'Emily' flying boats. Her most prominent feature was a huge 35-ton crane mounted on the stern, which was used to lift the giant aircraft from the water for maintenance and repairs. This capability made her a valuable and high-priority asset during the Pacific War.

    On September 24, 1944, the Akitsushima was anchored in Coron Bay, Philippines, when she was caught in a massive air raid by US Navy aircraft from Task Force 38. The ship was hit by bombs and strafing fire, which ignited her fuel stores. A catastrophic explosion followed, tearing the vessel apart and sending her to the bottom almost instantly. The Akitsushima sank with significant loss of life, becoming one of several Japanese ships to meet their end in Coron Bay that day.

    Today, the Akitsushima is considered the crown jewel of wreck diving in Coron. The 118-meter-long warship lies on its port side at a depth of 36 meters. Divers can explore its ghostly remains, including the colossal crane which now lies on the seabed beside the hull. Anti-aircraft guns are still in their mounts, and the massive engine room offers a thrilling penetration for experienced wreck divers. The entire structure is encrusted with coral and swarmed by marine life, transforming a tomb of war into a vibrant underwater monument.

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    Conditions

    Ocean conditions, forecast and tides for Akitsushima

    Akitsushima Ocean Conditions

    Monthly averages for Akitsushima, 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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