El Arco del Tropic - Malpelo Island
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.
- Location
- Malpelo Island, Colombia, South America
- Coordinates
- 4.001823, -81.603980
- Type
- cave
Marine Protected Area: Sanctuaire de faune et de flore de Malpelo
Best Time to Dive in Malpelo Island
The warmest water temperatures in Malpelo Island occur in October, averaging 30.2°C. The coolest conditions are in February at 28.0°C.
Monthly Water Temperatures
- January: 28.2°C
- February: 28.0°C
- March: 28.3°C
- April: 29.0°C
- May: 29.7°C
- June: 29.9°C
- July: 29.4°C
- August: 29.4°C
- September: 29.9°C
- October: 30.2°C
- November: 29.4°C
- December: 28.7°C
Nearby Dive Sites in Malpelo Island
- Alice-Agnes Rocks (reef)
- Aquamarina
- Aquarius
- Archies Rock (reef)
- Arrecife Edinburgh (reef)
- Arthur Jackson Reef - 5-20m (reef)
- Asmalera Rocks (reef)
- Auiapuni Reef (reef)
- Auikera (reef)
- Bajo Bonito (reef)
- Bajo Caribana (reef)
- Bajo del Anda (pinnacle)
- Bajo del Cholo (pinnacle)
- Bajo del Hospital
- Bajo del Junior (pinnacle)
Nearest Dive Centres to El Arco del Tropic
Marine Life in Malpelo Island
Home to 72 recorded species including 68 reef fish, 2 other, 1 hard corals, 1 sea cucumbers.
Notable Species
- Silver mojarra (Eucinostomus argenteus) - Reef Fish
- Snapper (Lutjanus synagris) - Reef Fish
- Kwab (Sparisoma radians) - Reef Fish
- Butterfly (Chaetodon capistratus) - Reef Fish
- Cola (Ocyurus chrysurus) - Reef Fish
- Banded Wrasse (Halichoeres notospilus) - Reef Fish
- Flamefish (Apogon maculatus) - Reef Fish
- Mutton Snapper (Lutjanus analis) - Reef Fish
- Fringed Filefish (Monacanthus ciliatus) - Reef Fish
- Molly Miller (Labrisomus nuchipinnis) - Reef Fish
- Spiny Brittle Star (Ophiocoma echinata)
- Puffer (Sphoeroides spengleri) - Reef Fish
- Threeband Butterflyfish (Chaetodon humeralis) - Reef Fish
- Puffer (Sphoeroides testudineus) - Reef Fish
- Barber (Acanthurus bahianus) - Reef Fish
- Parrotfish (Thalassoma bifasciatum) - Reef Fish
- Yellowtail Parrotfish (Sparisoma rubripinne) - Reef Fish
- Mulet (Mugil curema) - Reef Fish
- Schoolmaster (Lutjanus apodus) - Reef Fish
- Panamic frillfin (Bathygobius ramosus) - Reef Fish
Recommended Packing List for El Arco del Tropic
Based on average water temperature of 29.2°C, currents 14 cm/s.
- Shorty or Rashguard - warm 29°C water needs minimal exposure protection
- Mask - essential for every dive
- Fins
- BCD - buoyancy compensator
- Regulator - your most safety-critical piece of gear
- Dive Computer - tracks depth, time, and NDL
- Surface Marker Buoy (SMB) - essential for boat pickups
- Dive Torch - useful for crevices and colour at depth
- Underwater Camera - capture your diving memories