Hi ... I have been diving in Bugg Spring. I just saw this thread and registered so I could respond ... The spring is "Bugg Spring" ... try that in google and you will get a lot of hits from the navy and florida geological survey. The spring is 176 feet deep ... my dad has been to the bottom and I have been about 100 feet. My family bought it 1923 and we've been the only people to dive it except for a few guests. The Navy does sonar research ... see thier web site ... and they have been broken into in the past and now have guards patroling the site. The run is fenced off and monitored. It is a young sink hole with little or no cultural resources ... I am an archaeologist and hoped for the best but still enjoy the dive. My dad Joe Branham is a marine biologist and has been diving it starting in the 1950's as part of his masters thesis on hawthorne group formations. Typical hour glass shape with the narrowest wall at 70 feet .. the surface is about 2 acres and it constricts down to 1.2 acres at 70 feet bs. It's named after a young seminole (Billy Bugg) who died there while collecting water. This is mostly ledgend as we have not found the cart or the boy ... I think is was made up to scare the locals away by the owners of the day. My great uncle has a good write up in the Florida Entomologist about mosquito control at the spring and so I guess that it was called that because you can't breath near the spring with out choking on buggs. It's a second mag spring with lots of silt and has a surface vis of about 30 feet on a good day. We have some overly friendly gators because the navy boys feed them (against our wishes) marshmallows. Due to the silt we have a lot of cat fish and mud fish. Hopes this helps. charly branham