Blue Grotto
Conditions
Scored by DiveConnect's site-physics model
Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.
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About this site
Blue Grotto is a freshwater spring cavern dive site in Florida, suitable for divers of all certification levels. The site features crystal-clear water and striking rock formations, with a maximum depth of 100 feet (30.4 metres). At 30 feet (around 9 metres), divers encounter the site's signature air bell, a naturally occurring pocket of air where it is possible to briefly surface and speak to a dive buddy underwater.
The terrain is a submerged cavern environment with notable rock formations and fossils visible along the descent. Visibility is excellent throughout the site, and the water temperature holds at a steady 22–23°C year-round, making it a year-round diving destination. Dive lights — both primary and backup — are required.
Marine life at Blue Grotto includes fish and at least one resident turtle that divers regularly encounter during guided dives. Soft-shell turtles have also been recorded at the site.
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Entry is via guided dive, with each dive running approximately 45 minutes to an hour. Participants must be at least 12 years old and hold a scuba certification, as the depths involved require formal training. Divers should also be comfortable in enclosed or confined spaces given the cavern nature of the site.
Durable tips from divers — access, hazards, marine life, facilities. For day-of conditions, use the report tool in the conditions card above.
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