Hart Springs is a large spring-fed site in the Big Bend region, featuring three distinct boils. The area offers a shallow run leading toward the Suwannee River, characterised by aquatic vegetation. Snorkellers can expect depths ranging from 2 to 9 metres, with an average depth of 5 metres. Visibility at the site typically fluctuates between 10 and 30 metres. Access is via the shore, and the site is suitable for beginners. Be aware that moderate to strong currents may be present. On-site facilities include parking, toilets, showers, changing rooms, equipment rental, a cafe, and options for boat charters or guided tours.

Manatee Springs State Park is a first-magnitude spring featuring a deep limestone vent and a 800-foot boardwalk. This site offers both cavern and cave environments with depths ranging from 1 to 18 metres, averaging 10 metres. Divers and snorkellers can expect water temperatures of 22 degrees Celsius year-round. Entry is via the shore, and the site is suitable for beginners. Visibility varies significantly from 3 to 30 metres, and users should be aware of hazards including entanglement, low visibility, overhead environments, and moderate currents. The habitat supports a variety of freshwater fish and invertebrates typical of the region.

Catfish Hotel Sink is a freshwater cavern located in Crystal River, United States. This site offers depths ranging from 2 to 8 metres, making it accessible for beginner-level cavern divers. Divers enter from the shore to explore the overhead environment, which requires specific cavern certification. Visibility at the site typically ranges between 10 and 30 metres. The water temperature remains a constant 21 to 22 degrees Celsius year-round. Facilities available at the location include parking, toilets, showers, changing rooms, a rinse station, and an on-site dive shop. Divers should remain aware of potential entanglement risks and disorientation associated with the overhead environment.

Rock Bluff Springs is a second-magnitude spring located in Florida, United States. The site features multiple vents situated within a large pool surrounded by ancient cypress trees. Divers and snorkellers can explore depths ranging from 1 to 9 metres, with an average depth of 5 metres. Conditions are variable, with visibility typically between 3 and 12 metres and mild currents. Access is available from both the shore and by boat. The site is suitable for beginners, with typical dive times lasting around 60 minutes. Facilities provided at the location include parking and toilets.

Ginnie Ballroom is a freshwater cavern and cave site located within the Devil’s Spring System. Divers and snorkellers access the site via a shore entry, experiencing depths ranging from 5 to 15 metres with an average of 10 metres. The site features high visibility of up to 60 metres, though conditions include moderate currents, cold water, and an overhead environment. The area is suitable for beginners, with typical dives lasting 20 minutes. Species recorded around this area include longnose gar, redbreast sunfish, blue gill, large mouth bass, perch, livebearer, mullet, snail, pike, and redear sunfish. Facilities include parking, toilets, showers, changing rooms, air fills, equipment rental, a dive shop, and a cafe.

The Ballroom is a freshwater cavern and cave system located in the Nature Coast region of the United States. Divers access the site via the shore, entering a space that ranges from 4 to 15 metres in depth, with an average of 12 metres. The site features mild currents and visibility typically between 15 and 30 metres. It is suitable for beginners and supports night diving, with a typical dive duration of 50 minutes. Species recorded around this area include longnose gar, redbreast sunfish, blue gill, large mouth bass, perch, livebearer, mullet, snail, pike, and redear sunfish. On-site facilities include parking, toilets, showers, changing rooms, a rinse station, air fills, and equipment rental.

Gilchrist Blue Springs is a second-magnitude spring located in Florida. The site features a shallow spring run with eelgrass and a constant water temperature of 22°C year-round. Divers and snorkellers can expect visibility ranging from 15 to 25 metres. The site is accessible via shore entry and is suitable for beginners, with depths typically between 1 and 7 metres, averaging 4 metres. Typical dives last around 45 minutes. Facilities available on-site include parking, toilets, showers, changing rooms, equipment rental, and a cafe. Be aware of potential hazards including deep areas and down currents.

Ginnie Springs is a freshwater spring system located on the Santa Fe River, offering visibility between 30 and 60 metres. The site features a mix of open cavern areas and a cave network, with depths ranging from 5 to 18 metres and an average depth of 10 metres. Divers experience a moderate current, creating a drift-like environment in the open sections. The water temperature remains a constant 22°C year-round. Open-water divers are restricted to the natural light zone of the cavern, while full cave entry requires specific certification. Facilities include parking, air fills, showers, and changing rooms, supporting multiple dives throughout the day. Night diving is permitted at this location.