Seal Cay - Corn Islands
Seal Cay is one of those places on the Corn Islands that just feels right, a solid little dive. It’s an islet, really, with a decent spread of coral that offers a reliable fix of Caribbean reef action. We've seen a good mix of species here – the usual suspects like grunts, snapper, and the occasional inquisitive nurse shark gliding by. Visibility can be excellent, especially on a calm morning, letting you take your time exploring the nooks and crannies. It’s a great spot for a relaxed dive, suitable for most skill levels, and often feels like you have the place to yourself, which is always a bonus.
- Location
- Corn Islands, Nicaragua, Central America
- Coordinates
- 12.421389, -83.288890
- Type
- reef
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 Seal Cay
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 Seal Cay
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