Multi-day (2-day and longer) tickets expire 14 days after the first day is used, and the first use must be by December 31 of the year after they are purchased. So if you buy a multi-day ticket in 2017, you must begin using it by December 31, 2018 and it will expire 14 days after that first use day.
Dive Site Blue Grotto Dive Resort - Williston, FL. Blue Grotto is the largest clear water cavern located in the heart of freshwater spring country in Williston, Florida. The Blue Grotto lets you dive down to a depth of 100 feet (30 meters) in crystal clear water all the way down at a water temperature of 72 degrees Fahrenheit (23 degrees Celsius) all year round.
Descend down the first 70 feet of open water to view a variety of fish, fossils in the limestone walls, and even a friendly turtle. Along the way at 30 ft check out the air bell that made this grotto dive famous. The bell is located on the ceiling of this cavern dive and is supplied with compressed air from the surface. Talk to your dive buddy underwater, this florida spring allows you to do just that.