Conditions
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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
Forty Fathom Grotto is a freshwater sinkhole located near Williston in north central Florida. It reaches a maximum depth of about 18.3 metres and is considered a beginner-level dive, making it accessible to divers early in their training or newer to open water sites. As a landlocked cavern-type formation, it draws divers to its inland Florida location rather than any coastal setting.
AI overviewDurable 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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