Should you go?
Two minutes from Devil's Den, Blue Grotto is the serious sibling: a 100-foot-deep cavern with famously clear water, a permanent air bell 30 feet down, and platforms that make it the state's favorite dive-training site.
This one is for divers — swimmers should book Devil's Den instead — but for certification dives and cavern experience, nothing in Central Florida beats it.
Visiting
Reservation-based, roughly $30 per diver plus gear (verify current rates). Open-water certification is sufficient for the cavern zone with its guideline system; snorkelers are accommodated on quieter days. On-site lodging for dive groups.
Local tips
Book alongside Devil's Den for a two-site Williston dive day. Midweek mornings get the glassiest water.
Map & directions
FAQs
Do you need cave certification for Blue Grotto?
No u2014 the cavern is set up for open-water certified divers within its guideline system. Full cave training applies only beyond posted limits.
Can non-divers visit Blue Grotto?
It is dive-focused; snorkeling is sometimes available, but non-divers generally have a better time at Devil's Den nearby.
How deep is Blue Grotto?
The cavern reaches about 100 feet, with training platforms at shallower stages and an air bell around 30 feet.
Visitor photos
See this week's shots: Instagram #bluegrotto · TikTok #bluegrottodive
Great for: Scuba Diving · Snorkeling — in Central Florida