Diamond Cay - Roatán
Ile au Vache is a bit of a journey from Mahe, a good ten hours by boat, but we think it's worth every nautical mile. This isn't a gentle drift over soft corals; expect a backroll entry into often zippy currents that really get the adrenaline going. The site is a rugged landscape of granite boulders and swim-throughs, with some tight squeezes into small caves that bottom out around 20 metres. What we really love here are the bigger pelagics. We've often seen eagle rays glide past in the blue, and white-tip reef sharks are regulars patrolling the channels. Keep an eye out for the resident Hawksbill turtles, sometimes just chilling in the current. It’s a site for divers comfortable with dynamic conditions, who appreciate the thrill of a good current and the promise of some impressive encounters.
- Location
- Roatán, Honduras, Central America
- Coordinates
- 16.065100, -86.962300
- Type
- cave
Marine Protected Area: Sistema de Humedales de la Isla de Utila
Best Time to Dive in Roatán
The warmest water temperatures in Roatán occur in September, averaging 30.2°C. The coolest conditions are in February at 27.3°C.
Monthly Water Temperatures
- January: 27.4°C
- February: 27.3°C
- March: 27.4°C
- April: 28.0°C
- May: 28.9°C
- June: 29.3°C
- July: 29.1°C
- August: 29.7°C
- September: 30.2°C
- October: 30.0°C
- November: 29.1°C
- December: 28.3°C
Nearby Dive Sites in Roatán
- Airplane Wreck (cave)
- Airplane Wreck (wreck)
- Airport Caves (cave)
- Airport Caves (cave)
- Airport Caves (cave)
- Alaina’s Sandy Bottom (reef)
- Alaina’s Sandy Bottom (wreck)
- Anka s Place - 10-30m (reef)
- Anthony’s Key Resort House Reef (cave)
- Anthony’s Key Resort House Reef (reef)
- Aquarium (reef)
- Aquarium (cave)
- Bando Beach (reef)
- Bando Beach (reef)
- Bayman Drop (wall)
Nearest Dive Centres to Diamond Cay
Marine Life in Roatán
Home to 170 recorded species including 150 reef fish, 5 sea snails & nudibranchs, 5 hard corals, 4 other, 1 sharks & rays, 1 seagrass & algae.
Notable Species
- Whale Shark (Rhincodon typus) - Sharks & Rays
- Smallmouth goby (Risor ruber) - Reef Fish
- Giant goby (Gobiomorus dormitor) - Reef Fish
- Green Turtle (Chelonia mydas)
- Horse-eye Jack (Caranx latus) - Reef Fish
- Needlefish (Strongylura timucu) - Reef Fish
- Mulet (Mugil curema) - Reef Fish
- Broad Shad (Gerres cinereus) - Reef Fish
- Small-scaled spinycheek sleeper (Eleotris pisonis) - Reef Fish
- Hawksbill Turtle (Eretmochelys imbricata)
- Butterfish (Eucinostomus melanopterus) - Reef Fish
- Molly Miller (Bathygobius soporator) - Reef Fish
- Schoolmaster (Lutjanus apodus) - Reef Fish
- turtlegrass (Thalassia testudinum) - Seagrass & Algae
- Slippery Dick (Halichoeres bivittatus) - Reef Fish
- Great Barracuda (Sphyraena barracuda) - Reef Fish
- Common Snook (Centropomus undecimalis) - Reef Fish
- American eel (Anguilla rostrata) - Reef Fish
- Hound Needlefish (Tylosurus crocodilus) - Reef Fish
- Scrawled Sole (Trinectes inscriptus) - Reef Fish
Recommended Packing List for Diamond Cay
Based on average water temperature of 28.7°C, currents 7 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