Compass Reef - Corn Islands
Compass Reef is one of our favourite dives in the Corn Islands. It’s not just a reef; it’s a wreck that has become a reef. The remains of a small cargo ship, perhaps a fishing vessel, lie scattered across the seafloor, its ribs now encrusted with sponges and hard corals. What makes it special is the way the wreck has melded with the natural reef over decades. You’ll weave through coral bommies and then suddenly find yourself navigating the twisted metal remains of a hull, now home to swarms of glassfish and squirrelfish. We’ve seen nurse sharks resting under ledges here, and often, a resident green moray peeks out from a pipe. Visibility can be a bit variable, sometimes 15 metres, other days a crisp 25 metres. We’d suggest going in the morning; the light catches the wreck just right, and it feels a bit more secluded before any afternoon boats arrive. It’s a dive that rewards slow exploration, peering into every nook for macro life while still appreciating the larger structure.
- Location
- Corn Islands, Nicaragua, Central America
- Coordinates
- 12.430833, -83.336945
- Type
- wreck
Marine Protected Area: Cayos Perlas
Best Time to Dive in Corn Islands
The warmest water temperatures in Corn Islands occur in January, averaging 28.3°C. The coolest conditions are in December at 28.3°C.
Monthly Water Temperatures
- January: 28.3°C (air: 26.7°C)
- February: 28.3°C (air: 26.4°C)
- March: 28.3°C (air: 26.7°C)
- April: 28.3°C (air: 27.3°C)
- May: 28.3°C (air: 27.7°C)
- June: 28.3°C (air: 27.4°C)
- July: 28.3°C (air: 27.4°C)
- August: 28.3°C (air: 27.6°C)
- September: 28.3°C (air: 27.8°C)
- October: 28.3°C (air: 27.5°C)
- November: 28.3°C (air: 27.0°C)
- December: 28.3°C (air: 26.9°C)
Nearby Dive Sites in Corn Islands
- ATLANTIC FREEZE - 0m (wreck)
- Baboon Cay
- Baboon Cay (reef)
- Blowing Rock - 10-35m (reef)
- Blowing Rock (reef)
- Boden Reef (reef)
- Cave (wreck)
- Cayo Forster (reef)
- Cayo Forster (reef)
- Cayo French Man (reef)
- Cayo French Man (reef)
- Cayo Little Tyara (reef)
- Cayo Little Tyara (reef)
- Cayo Noreste (reef)
- Cayo Noreste (reef)
Nearest Dive Centres to Compass Reef
Marine Life in Corn Islands
Home to 209 recorded species including 173 reef fish, 21 hard corals, 3 other, 3 sharks & rays, 3 sea snails & nudibranchs, 2 starfish.
Notable Species
- Mustard hill coral (Porites astreoides) - Hard Corals
- Lettuce Coral (Agaricia agaricites) - Hard Corals
- Finger Coral (Porites porites) - Hard Corals
- Blue Doctor (Acanthurus coeruleus) - Reef Fish
- Sheephead (Microspathodon chrysurus) - Reef Fish
- Cola (Ocyurus chrysurus) - Reef Fish
- Gutong (Sparisoma aurofrenatum) - Reef Fish
- Dark Green Parrotfish (Sparisoma viride) - Reef Fish
- Elkhorn coral (Acropora palmata) - Hard Corals
- Great star coral (Montastraea cavernosa) - Hard Corals
- Barber (Acanthurus bahianus) - Reef Fish
- Massive Starlet Coral (Siderastrea siderea) - Hard Corals
- Gutong (Scarus iseri) - Reef Fish
- Butterfly (Chaetodon capistratus) - Reef Fish
- Spot Snapper (Lutjanus mahogoni) - Reef Fish
- Sammy Johnson (Scarus taeniopterus) - Reef Fish
- Angelfish (Pomacanthus paru) - Reef Fish
- Green Turtle (Chelonia mydas)
- Lesser Starlet Coral (Siderastrea radians) - Hard Corals
- Schoolmaster (Lutjanus apodus) - Reef Fish
Recommended Packing List for Compass Reef
Based on average water temperature of 28.3°C.
- Shorty or Rashguard - warm 28°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