San Juan & North Coast · San Juan
Blue Hole (Ocean Park)
Also known as: Ocean Park · Blue Hole
- Depth
- 10–100 ft (3–30 m)
- Access
- Boat dive
- Type
- Reef
- Confidence
- Low confidence
Heads up: Exposure to swell / weather. See safety notes
Overview
Blue Hole is an offshore reef off Ocean Park in San Juan, reached by dinghy or small watercraft. It is described as a circular white-sand hole ringed by cavernous reef, with elkhorn coral stands and a cave at the north end; manatees and turtles have been reported. The site lies several kilometers offshore, so plan for exposure and surface support. A 1998 guide gave depths of 10–100 ft.[1][2][3]
Site characteristics
- Reef[1]
Habitat & marine life
- circular white-sand hole in reef ringed by cavernous reef[1]
- elkhorn coral stands[1]
- manatees[1]
- turtles[1]
Marine life is what sources report having seen or commonly seeing — not a guarantee.
Access
Safety considerations
- Exposure to swell / weather — distance from shore[2]
Ocean conditions change daily. Dive within your training, plan with current local information and consider a local professional guide. Full safety note.
Depth reports by source
| Reported | Source | Status |
|---|---|---|
| 10–100 ft (3–30 m) | Colleen Ryan & Brian Savage / Complete Dive Guide Publications[3] | 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 “Blue Hole” · 10–100 ft (3–30 m) · 1998[3]
- boat
- reef ring around a deep sand hole
- central hole about 100 ft deep and ~60 yd wide
- rim reef rises to within ~10 ft of the surface
- stony corals and gorgonians on rim
Sources & verification
Last researched: 2026-10-04 · Last independently verified: not yet field-verified · Confidence: Low confidence
- 1.30 Best Scuba Diving Sites In Puerto Rico (2026) — PuertoRico.com (2026) · Travel resource · Tier 3: Corroborating · accessed 2026-09-25
- 2.8 Best Snorkel Spots In San Juan (2026) — PuertoRico.com (2026) · Travel resource · Tier 3: Corroborating · accessed 2026-09-25
- 3.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.