Mermaid Reef - Grand Cayman

Playa Cas Abao is one of those spots where you might find yourself lingering on the beach long after the dive, just soaking in the Caribbean sun. We love it for the sheer ease of access – a gentle sandy entry leads you straight out to a healthy reef system that begins to slope around 9 meters. It’s a gentle introduction to Curaçao’s underwater world, perfect for a relaxed afternoon. Our favourite part is the wall itself, a vibrant mix of branched finger corals and sponges that really brings the place to life. Keep an eye out for spotted trunkfish wobbling through the soft corals, or a bold sergeant-major darting past your mask. We’ve had great luck spotting blennies here too, peering out from their little coral hideaways. For a quiet, easy shore dive with plenty of photographic opportunities, Cas Abao is a solid choice. Go early to beat the beach crowds.

Location
Grand Cayman, Cayman Islands, Caribbean
Coordinates
19.285800, -81.392200
Type
reef

Marine Protected Area: Old Pageant Beach - Sand Cay Apartments (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 Mermaid 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 Mermaid 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 are the typical diving depths at Mermaid Reef in the Rowley Shoals?
Mermaid Reef, located in Grand Cayman, offers a maximum diving depth of 19 meters. This area is characterized by shallow reef formations. Please note, the provided information pertains to Mermaid Reef in Grand Cayman, not the Rowley Shoals in Western Australia.
What kind of marine life and corals can divers expect to see at Mermaid Reef?
Divers exploring Mermaid Reef can expect to see typical shallow reef formations, including coral fingers that run perpendicular to the shore. The site is also notable for its unique "mermaid" statue. While specific marine life is not detailed in the provided information, shallow reefs generally host a variety of reef fish and invertebrates.
How difficult are the dives at Mermaid Reef, and is it suitable for beginners?
Dives at Mermaid Reef are rated as intermediate difficulty. While not explicitly for beginners, divers with some experience and appropriate certifications should find it manageable. It's always recommended for less experienced divers to go with a guide.
What is the best time of year to dive at Mermaid Reef in Western Australia?
The provided data for Mermaid Reef is specific to Grand Cayman, Cayman Islands, not Western Australia. Information regarding the best time of year to dive at this particular site in Grand Cayman is not available in the provided context. For general guidance on diving seasons, you might consult our When to Dive section.
What diving certifications and experience are required to dive at Mermaid Reef?
Given the intermediate difficulty rating for Mermaid Reef, divers are typically expected to have at least an Open Water Diver certification and some prior diving experience. It's always wise to check with local dive operators in Grand Cayman for their specific requirements and recommendations.
What are the typical current conditions and visibility like at Mermaid Reef?
Divers at Mermaid Reef can typically expect excellent visibility, averaging around 20 meters. Information regarding specific current conditions at this site is not detailed in the provided data.