Malpelo Island, Colombia
    Sanctuaire de faune et de flore de Malpelo

    El Arco del Tropic

    Best months: Jan–Apr

    Protected Area

    Sanctuaire de faune et de flore de Malpelo

    Why dive here

    With 71+ marine species recorded in the area - including barracuda and pufferfish - El Arco del Tropic offers some of Malpelo Island's richest cave diving. Water ranges 28-30°C, warmest September, October, November.

    Best timeJan–Apr
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBarracuda and Pufferfish · 71+ species recorded
    Water28-30°C · warmest September, October, November
    CharacterCave dive
    StandoutDramatic cave topography

    El Arco del Tropic is where Malpelo truly flexes its muscles. We love dropping into this one, especially when the current isn’t too feisty. It’s not just an arch, it’s a gateway into a different world, carved out of the rock face. You're enveloped by the deep blue, the visibility often stretching so far you feel like you can see forever. Keep an eye out for the big stuff here, it's what Malpelo is famous for. We’ve had incredible encounters with Galapagos sharks, circling with that lazy, powerful grace. Look a little closer, and you'll spot Cauliflower and Corrugated corals clinging to the rock, providing shelter for smaller fish like Pink Cardinalfish. Our favourite moment is often seeing the schooling Pompano, a shimmering silver river moving as one. It's a site that suits experienced divers who appreciate the raw, wild nature of an oceanic outpost, a place where the ocean’s giants come to play. It's truly a standout dive for the sheer scale of the encounters.

    Safety Notes

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

    Today06:1318:1612h 3m daylightGolden hour 17:48

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    Conditions

    Ocean conditions, forecast and tides for El Arco del Tropic

    El Arco del Tropic Ocean Conditions

    Monthly averages for El Arco del Tropic, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (12.4, -81.47) (108km away)

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    October Averages

    Sea Temperature

    30°C

    86°F · Range: 29.3–31.3°C

    Current Speed

    13.42 cm/s

    Direction: NE (63.4°)

    Chlorophyll-a

    0.094 mg/m³

    Very clear (oligotrophic)

    Salinity

    34.38 PSU

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

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