This dive site, Hospital Hole, is a unique freshwater sinkhole located in the Weeki Wachee River system. It earned its name from a local legend where sick and wounded fish are believed to seek refuge in its peculiar waters to heal before returning to the sea. Divers navigate into a large open sink structure, descending through clear fresh water until they encounter a distinct, milky white hydrogen sulfide layer, which typically sits around 20-25 meters. Below this layer, the environment becomes darker and more confined, with unique geological formations and restricted visibility.
While not abundant with typical marine reef life, Hospital Hole supports a variety of freshwater fish that are attracted to its waters, possibly including species like bass, catfish, and other native river fish. The unique chemistry of the hydrogen sulfide layer creates an unusual environment, and while not explicitly stated, some forms of cave-dwelling invertebrates might inhabit the deeper, darker sections. Plant life is generally sparse due to the depth and light conditions, especially below the hydrogen sulfide layer.
The best time to visit Hospital Hole is often during cooler months when river traffic is less intense, providing a more tranquil diving experience. Divers should be proficient in buoyancy control to avoid disturbing the hydrogen sulfide layer, which can significantly reduce visibility. Freedivers will find the site challenging and rewarding, with the ability to explore the upper reaches of the sink and potentially penetrate the hydrogen sulfide layer on a single breath. Always be mindful of boat and canoe traffic on the Weeki Wachee River during entry and exit from Roger's Park.
