Calvin s Crack - Roatán
Calvin’s Crack on Roatán's south side offers a unique swim-through experience. Divers drop into a crack at around 15 metres, following it down through interesting rock formations to an exit around 25 metres. It's a relatively easy penetration, good for those looking for a different kind of dive without serious overhead environment training. Keep an eye out for schooling fish near the opening.
- Location
- Roatán, Honduras, Central America
- Coordinates
- 16.381496, -86.372770
- Type
- cave
Marine Protected Area: Islas de la Bahía
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 Calvin s Crack
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 Calvin s Crack
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