KP Hole Park serves as an entry point for drift diving the spring-fed Rainbow River. This freshwater site features depths reaching 7 metres with an average of 3 metres. Divers experience mild currents and visibility ranging from 30 to 60 metres. Access to the river requires a boat, and the site is suited for intermediate divers. Facilities at the park include parking, toilets, showers, changing rooms, a cafe, and equipment rental. Species recorded around this area include Longnose Gar, Redbreast Sunfish, Blue Gill, Large Mouth Bass, snails, Redear Sunfish, and livebearers. Divers should remain aware of boat traffic and potential entanglement hazards during their 60-minute dives.

KP Hole is a freshwater spring run in Crystal River, Florida, offering a gentle drift experience suitable for beginners. The site features depths ranging from 2 to 7 metres, with an average of 3 metres. Divers and snorkellers enter from the shore, allowing the mild current to carry them downstream. Visibility is variable, ranging from 23 to 76 metres. The site includes facilities such as parking, toilets, showers, and changing rooms. Due to the overhead environment and boat traffic near the entry point, constant vigilance is required. Species recorded around this area include longnose gar, large mouth bass, blue gill, redbreast sunfish, snails, redear sunfish, and livebearers.

Rainbow River is a freshwater drift dive located in Crystal River, United States. The site features a riverbed characterized by spring vents and grass beds, with a small cavern located at the end of the drift. Divers can expect depths ranging from 3 to 7 metres, with an average depth of 3 metres and a maximum of 7.6 metres. Visibility is high, typically between 30 and 60 metres. The dive requires boat access and is suitable for beginners, with mild currents and a typical dive duration of 60 minutes. Night diving is permitted. Divers should remain aware of boat traffic throughout the area.

Forty Fathom Grotto is a deep freshwater site in Crystal River, Florida, designed for advanced divers with technical or cave certifications. The topography includes a combination of cave passages, artificial reef structures, and a wreck. Divers enter from the shore to explore depths ranging from 3 to 73 metres, with an average depth of 30 metres. Conditions include mild currents and visibility between 3 and 18 metres. Water temperatures vary with depth, becoming colder at the bottom. Due to the overhead environment and significant depth, divers must maintain strict buoyancy and gas management. Facilities on-site include a dive shop, air fills, showers, changing rooms, and parking.

Jurassic Spring in Crystal River is a freshwater spring site offering a shallow diving and snorkelling experience. The site features an average depth of 5 metres, with a range between 4 and 6 metres. Conditions are generally mild, though divers and snorkellers should remain aware of boat traffic in the area. Access to the water is available via both shore and boat entries. The water temperature remains a constant 22 degrees Celsius throughout the year. Equipment rental and dive shop facilities are available nearby to support visitors.

Hunter Springs Park in Crystal River is a shore-access site featuring a small beach and a designated roped-off swimming area. It serves as a primary location for snorkelling and diving in the region. The site reaches depths of 1 to 6 metres, with an average depth of 5 metres. Water temperatures remain a constant 22 degrees Celsius year-round due to the natural springs, though seasonal fluctuations in the surrounding area range from 16 to 31 degrees Celsius. Visibility typically varies between 5 and 15 metres. Facilities available on-site include parking, toilets, showers, changing rooms, and a rinse station. Potential hazards at this site include jellyfish, sea urchins, and stonefish.

Hunter Spring is a freshwater spring basin in Crystal River, United States, offering a calm environment for divers. The site features a shallow depth of 4 to 5 metres, making it suitable for beginners to practice buoyancy. Shore entry is straightforward, with on-site facilities including parking, toilets, and changing rooms. Visibility typically ranges from 5 to 15 metres. Divers should remain aware of boat traffic when entering or exiting the water and avoid submerged lines to prevent entanglement. While the aquifer maintains a consistent temperature, deeper pockets can feel cooler, so appropriate thermal protection is recommended. Surface marker buoys are advised due to active vessel movement in the area.

American Pro in Crystal River offers a diverse underwater environment ranging from 3 to 36 metres. This site features a combination of open reef, cavern, and cave sections, often experienced as a drift dive due to strong currents. With visibility reaching 60 metres, the site requires advanced buoyancy control and the ability to navigate shifting water movement. Shore entry provides access to the area, which is supported by full facilities including air fills, equipment rental, and showers. Due to the significant vertical profile and overhead environments, this site is suited for intermediate divers with appropriate technical training for cave and cavern sections.