El Arco del Tropic
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.
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.
Reviews for El Arco del Tropic
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)
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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