NBM Dive Site Resource
Blue Hole Spring (Jug Hole)
Fort White, Florida, United States
TECHNICAL DIVE REQUIRED FOR CAVE PENETRATION — The open-water basin or cavern zone may support less advanced activity where current site rules allow, but entering the cave system requires specialized cave-diving training, redundant equipment and overhead-environment procedures.
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Historic Photograph
Aquatic life at this dive site
What divers may encounter
Three reviewed connections are featured here. Sightings vary by season, conditions, and chance, so they are never guaranteed.
Longnose Gar
Lepisosteus osseusLongnose gar are documented in the Ichetucknee system and can gather in spring-run habitat, particularly around the winter-to-spring spawning period.
USFWS Mountain-PrairieOpen Aquatic Life Profile →
Striped Mullet
Mugil cephalusStriped mullet are documented in the Ichetucknee system. They are most likely in the spring run and open water above the cave entrance rather than deep in the overhead passage.
Diego DelsoOpen Aquatic Life Profile →
Largemouth Bass
Micropterus salmoidesThe park management inventory documents Florida largemouth bass in the Ichetucknee system. Divers may see bass near vegetation and structure in the spring basin.
USFWS Mountain PrairieOpen Aquatic Life Profile →
Site media
Photographs
Three views rotate from the published gallery on each visit.
Contributor media
Dive videos
Three featured video positions are reserved on every profile.Published reference location
Location map
The marker shows the public coordinates associated with this profile. Confirm current access, moorings, and departure details before the dive.Map data © OpenStreetMap contributors
Recent field observations
Diver-reported temperatures
Automatically checked observations from dives during the past 14 days. Three reports are visible at a time; scroll for more.A report that passes the automatic checks will appear here with the dive date, diver’s display name, and temperatures at each depth.
Reports are automatically checked for plausible dates, depths, and temperatures. They are observations, not forecasts; confirm conditions before diving.
Why divers know this place
Highlights
Cavern or cave certification is required to enter through the vent; scuba is prohibited in the river and other park springs
Before you arrive
Access notes
Cavern or cave certification is required to enter through the vent; scuba is prohibited in the river and other park springs Confirm current rules, hours, water level, visibility, fees and emergency plan directly before travel. Cave penetration is not recreational open-water diving. Present required certification, register or obtain permission where applicable, use a qualified buddy team, and confirm current flow, visibility, closures and landowner or park rules.
Plan within your training
Conditions and hazards
Cold-water exposure, changing visibility and water level, current or flow, submerged timber/rock, entanglement, wildlife, difficult entry/exit, and separation from the surface. Any overhead or technical route adds loss-of-line, gas, depth, decompression and rescue-limit hazards. Permanent overhead, no direct ascent, darkness, silt-out potential, restrictions, line entanglement, high flow or siphon conditions, complex navigation, gas-management demands and possible decompression obligations.
Independent resource notice
This record is a starting point for independent verification. Access, closures, moorings, weather, currents, depth, visibility, operator availability, and site conditions can change without notice. Confirm current information with the responsible operator, property owner, managing authority, or another qualified local source before planning or attempting a dive.