Blue Grotto Dive Resort

Blue Grotto Dive Resort

Blue Grotto – Williston, FL

Blue Grotto Dive Resort is another great scuba site located near Devil’s Den in Williston, FL, about 2 hours north of the Tampa/St. Petersburg area. The freshwater springs are a constant 72 degrees. The location is great for students and training, as well as certified divers. The Grotto has a classroom and 12ft training pool (reserve in both advance), as well as a strategically placed platform into the springs to practice giant stride & back roll entries.

As you enter the open-water basin (depth of 40 feet/12 meters), there are 3 large platforms for training purposes. To get to depth of 50ft/15m, you’ll need to enter the large upper cavern; there’s an air bell near the entrance with breathable air and viewing windows – definitely worth checking out. There’s a lower cavern for those with the proper training & certs, offering depths up to 100ft/30m). Interesting artifacts are found throughout the cavern and keep your eyes peeled for the underwater resident, Miss Virgil the Turtle – you won’t be able to find her, but she will definitely find you.

Have no fear if you are cave certified – there’s some fun for you, too! The Cave at the Blue Grotto Dive Resort is something few have seen; it remains in its almost natural state, with fragile rock formations and deep, undisturbed layers of silt. Access is limited to those with exceptional skills, including proper cave certification, so the site is something few have seen. To ensure the preservation of the cave, you’ll need a qualified guide in addition to highest level of skills.

Cabins, cottages, tent & RV sites are available for camping on property. You can even book a reservation online.

There is a boat load of information online whether you are an instructor, student, or planning a dive trip with family & friends. This includes forms such as waivers and liability releases.

Entrance at Devil's Den

Devil’s Den Prehistoric Spring

Devil’s Den – Williston, FL

Devil’s Den Prehistoric Spring is a unique little spot in Williston, FL. The underground spring is formed by a karst window. It is home to extinct animal fossils dating back 33 million years. The water is crystal clear with maximum depth of 54 feet/16.45 meters. Much like Blue Grotto, the water is a constant 72 degrees Fahrenheit.

The name “Devil’s Den” was given by early settlers – not because of spooky things lurking below the surface, but from cold winter mornings where you can see smoke-like steam rising from the chimney opening.  Newbie divers looking to obtain Open Water certification regularly use this privately owned and operated training and recreational facility. You can opt for snorkeling if diving isn’t your jam.

  • Entrance at Devil's Den
  • Overlook at Devil's Den
  • Surface Interval
  • Wetsuits hanging to dry after our dives
  • Exit at Devil's Den

Scuba diving admission is $38 per person and is first come, first served, except for night diving, where you’ll need to make an appointment at least 7 days in advance. Full scuba rental gear is available for an additional $45, or individual equipment rental is available. You must have a dive buddy for admission. No doubles, reels, re-breathers, knives, or side mounts allowed. Absolutely no cave entry.

Snorkeling is available BY APPOINTMENT ONLY. ​Each snorkeler must register individually.  

You can book a reservation for camping – options include cabins, tents and RVs. The lodging fees do NOT include snorkeling or diving admission fees.

Devil’s Den is open 364 days a year, closing only on Christmas Day. Hours of operation are 9:00am-5:00pm EST Monday – Thursday, and 8:00am-5:00pm EST on Friday, Saturday & Sunday. Make sure you’re in the water by 4:00pm EST if you are looking to dive here!