Jackson Blue Spring is a advanced shore dive site in Florida, United States with depths of 5–27.4 m (16–90 ft). Typically most favorable Jul · from 3 years of archive data. Divers commonly see Bluegill, Largemouth bass, and Florida gar. Check the latest conditions and entry details before you go.
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Site hazards: Extensive overhead cave system with strong outflow at the entrance
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Best: TueFavorable windowModerate window— no window
First light 5:28 · Sunrise 5:54 · Sunset 19:39
Source: Open-Meteo wind · graded 5h ago
Forecast only — always assess conditions on site.
Dated firsthand observations from divers — not current conditions.
No diver reports for this site yet. — one dated observation helps every diver after you.
Based on community reviews and site data. Conditions vary — always verify before diving.
What conditions have historically been typical at this site, month by month — not a forecast.
July hastypically had the largest share of favorable days here. Conditions vary year to year — this is historical context, not a forecast.
Based on 3 years of archive data. Bar height shows the share of days each month whose conditions have historically scored favorably.
Species noted at this site — not a promise of what you’ll encounter.
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Jackson Blue Spring is a first-magnitude spring at the head of Merritt's Mill Pond near Marianna and one of the most popular full-cave dives in the United States. The entrance at the main vent leads into miles of mostly large, clear, white-limestone passage with notable flow, commonly dived with stages and DPVs. Access is by permit through Cave Adventurers with a gate code for year-round entry; the basin doubles as a county swim park in summer.
Extensive overhead cave system with strong outflow at the entrance — Full Cave certification required. Hazards: high flow (strenuous entry against current), silting in side passages, long penetrations commonly done with stages/DPVs, navigation complexity. Spring basin is closed to divers' staging during summer swim season hours; permit and gate-code system controls access.
Jackson Blue Spring is rated as advanced difficulty, which may not suit new divers. A Full Cave certification required for the cave; open-water divers are limited to the small basin and other Merritt's Mill Pond sites. NSS-CDS/NACD/TDI Cave or equivalent. certification or equivalent is suggested. Consider your experience level, conditions, and local guidance before planning.
Jackson Blue Spring has a depth range of 5–27.4 metres (16–90 feet). Check the dive site page for current conditions and any depth-specific guidance before planning your dive.
The best time to dive Jackson Blue Spring is typically Year-round for permitted cave divers (72 F water, typically excellent visibility); off-season (after Labor Day to before Memorial Day) avoids swim-season crowds and access restrictions.. Conditions vary, so check the latest reports and forecasts on the dive site page before your trip.
Divers at Jackson Blue Spring in United States commonly report sightings of Bluegill, Largemouth bass, Florida gar, American eel, and Cave crayfish (troglobitic). Marine life varies by season and conditions—check the site page for recent diver observations and photos.
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