Horseshoe Reef
Dive siteFrom Puerto Rico Dive Sites, the sourced field guide
Horseshoe Reef
| Region | San Juan & North Coast |
|---|---|
| Municipality | San Juan |
| Access | Shore dive |
| Site type | Not established |
| Depth (reported range) | 20–30 ft (6–9 m)Historical source only (1998) |
| Location | No reliable coordinates yet. |
| Confidence | Moderate confidence |
| Last researched | 2026-10-17 |
Overview
Horseshoe Reef is a shore-dive reef in San Juan that a local operator describes together with nearby Figure Eight: right off the beach, '30 ft high', with tunnels to swim through and fish feeding. The operator calls the reef a breeding area for marine life, including seahorses, octopus, squid, crustaceans, drum fish, batfish, French angelfish and snappers. A 1998 guide gave depths of 20–30 ft.[1][2]
Site characteristics
- tunnels to swim through[1]
Habitat & marine life
Marine life is what sources report having seen or commonly seeing — not a guarantee.
Access
- Shore dive[1]
Recent diver reports
Dived here recently? Share a quick report
First-hand reports from divers, reviewed before they appear. Conditions change daily; a report describes one day.
Safety considerations
No site-specific hazards are recorded in our sources. That does not mean there are none.
Ocean conditions change daily. Dive within your training, plan with current local information and consider a local professional guide. Water safety guide.
Depth reports by source
| Reported | Source | Status |
|---|---|---|
| 20–30 ft (6–9 m) | Colleen Ryan & Brian Savage / Complete Dive Guide Publications[2] | Historical (1998) |
Historical record
What a historical source reported at the time. Not verified as current — access, moorings, reef condition and names may have changed.
Listed as “Horseshoe Reef” · 20–30 ft (6–9 m) · 1998[2]
- shore — long surface/underwater swim beyond Figure of Eight
- current and sea state limit how often it can be dived
- tunnels and crevices cut through the reef
- cave/tunnel about 100 ft long that surge carries divers through
- surge in tunnels
Sources & verification
Last researched: 2026-10-17 · Last independently verified: not yet field-verified · Confidence: Moderate confidence
- 1.Scuba Diving San Juan — Caribe Aquatic Adventures (diveguide.com listing) — Caribe Aquatic Adventures (2022) · Dive operator · Tier 2: Specialist · accessed 2026-10-12
- 2.The Complete Diving Guide: The Caribbean, Volume 3 (Puerto Rico, US Virgin Islands, British Virgin Islands) — Colleen Ryan & Brian Savage / Complete Dive Guide Publications (1998) · Historical guide · Tier 3: Corroborating · historical
Facts are summarised in our own words from the sources above; we do not reproduce operators’ or publishers’ descriptions. How confidence is assigned.