Lone Star Reef - Grand Cayman

Ot Di Ma sits a decent boat ride from the main dive hubs, which usually means fewer divers on the line. We love that. The reef itself starts shallow, around 5m, then rolls down to about 21m before dropping into deeper water. Our favourite part here is the coral garden, particularly the large plate corals that feel ancient, like they’ve been growing for centuries. Look closely on them for Seastar Shrimp or Pygmy Seahorses, they blend in well. We’ve seen reef manta rays glide through the blue here, so keep an eye out beyond the reef edge, especially if there's a gentle current. The fish life is a solid mix – we’ve consistently spotted schools of fusiliers, various surgeonfish, and those fascinating sidespotted dragonets dancing over the sand. It’s a site that rewards slow diving, suitable for anyone who enjoys a peaceful drift over healthy corals and wants to search for the smaller stuff, with the added bonus of potential pelagic sightings. Visibility is usually a comfortable 15m, sometimes more.

Location
Grand Cayman, Cayman Islands, Caribbean
Coordinates
19.327000, -81.390900
Type
reef

Marine Protected Area: Victoria House- Treasure Island Resort (Grand Cayman)

Best Time to Dive in Grand Cayman

The warmest water temperatures in Grand Cayman occur in September, averaging 30.4°C. The coolest conditions are in February at 26.9°C.

Monthly Water Temperatures

  • January: 27.3°C
  • February: 26.9°C
  • March: 27.0°C
  • April: 27.7°C
  • May: 28.7°C
  • June: 29.2°C
  • July: 29.8°C
  • August: 30.3°C
  • September: 30.4°C
  • October: 30.0°C
  • November: 29.0°C
  • December: 28.0°C

Nearby Dive Sites in Grand Cayman

Nearest Dive Centres to Lone Star Reef

Marine Life in Grand Cayman

Home to 332 recorded species including 276 reef fish, 30 hard corals, 5 other, 5 seagrass & algae, 4 whales & dolphins, 4 sharks & rays.

Notable Species

Recommended Packing List for Lone Star Reef

Based on average water temperature of 28.7°C, currents 9 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

Frequently Asked Questions

What is the typical depth range for diving at Lone Star Reef in Grand Cayman?
Lone Star Reef is a beautiful shallow reef system with a maximum depth of 17 meters. Divers can explore ledges and a surrounding sand patch within this depth range. For more details on this site, visit the Lone Star Reef page.
What kind of marine life and underwater features can divers expect to see at Lone Star Reef?
Divers at Lone Star Reef can expect to see a beautiful shallow reef system featuring numerous ledges and a big sand patch. The site boasts a mix of soft and hard coral, colorful sponge life, and marine inhabitants like grunts and angel fish. There's also an interesting exit to an underwater fresh water cave system on the southern part of the site.
How difficult is the Lone Star Reef dive site, and is it suitable for beginner divers?
The Lone Star Reef dive site is rated as intermediate difficulty. While not explicitly for advanced divers, it may present challenges that make it less suitable for absolute beginners without proper guidance or experience. Divers should have a good grasp of basic skills before attempting this site.
What is the best time of year or season to dive at Lone Star Reef for optimal conditions?
The provided data does not specify the best time of year or season to dive at Lone Star Reef for optimal conditions. For general information on diving seasons in the region, you might consult our When to Dive guide.
What scuba diving certifications are required to dive at Lone Star Reef?
The provided data does not specify the exact scuba diving certifications required to dive at Lone Star Reef. Given its intermediate difficulty, divers should typically hold at least an Open Water Diver certification, and potentially more advanced training depending on specific operator requirements.
What are the typical current and water conditions like at Lone Star Reef in Grand Cayman?
At Lone Star Reef, divers can expect excellent average visibility of 28 meters. While specific current conditions are not detailed, on a rainy day, you might feel a thermocline exiting the underwater fresh water cave system located on the southern part of the site.