Horseshoe Reef
Dive between two crescent-shaped reefs with marine life, vibrant corals, and the occasional dragon moray.
Intermediate reef dive at 30–60 ft, with reef fish, white tip sharks, and unique underwater terrain.
Quick Facts
📍 Location: Off the coast of Oʻahu
🌊 Depth: 30–60 ft
🔦 Visibility: Up to 100 ft
🎯 Experience Level: Intermediate
🐟 Marine Life: Yellowtail coris, rock-mover wrasse, Sergeant Major, dragon moray, white tip reef sharks, reef fish
Horseshoe Reef is a unique and colorful dive site featuring two distinct horseshoe-shaped reef formations that give the site its name. Located off Oʻahu’s southern coast, it’s an intermediate-level reef dive known for high visibility, playful topography, and lively marine life.
Swim through coral channels, glide past reef ledges, and spot yellowtail coris, rock-mover wrasse, and Sergeant Major fish guarding their vibrant purple egg patches. At night, the elusive dragon moray sometimes makes an appearance, adding a thrilling twist to the site.
Just beyond the main reef, Secret Reef hosts a turtle cleaning station and sleeping white tip reef sharks, making this area a marine sanctuary full of surprises.
❓FAQs: Horseshoe Reef
How deep is Horseshoe Reef?
📏 The reef ranges from 30 to 60 ft, making it a fun and dynamic dive for intermediate-level divers.
What marine life will I see?
🐠 Expect to encounter:
• Yellowtail coris, rock-mover wrasse, Sergeant Majors, and colorful reef fish
• Occasional dragon morays, white tip reef sharks, and turtles near Secret Reef
When is the best time to dive Horseshoe Reef?
🌞 Horseshoe Reef can be dived year-round.
Warm waters (~75–80°F) and consistent conditions make it an enjoyable site any season.
Is this dive good for beginners?
⚠️ It’s best for divers with some experience. Beginner divers may participate under close supervision, depending on conditions.
What’s the visibility like?
👀 Visibility is typically up to 100 feet, with the clearest conditions during summer months.
What’s the water temperature like?
🌡️ Water temps around Oʻahu typically range from:
• 75°F in winter (January–March)
• 80°F in summer (July–September)
Most divers are comfortable in a 3mm wetsuit year-round. Rental wetsuits are available.