Has anyone looked at or dived the "Crescent Beach Submarine Spring", which is a magnitude 2 sping under that ocean about 2.5 miles off of Crescent Beach?

http://sjr.state.fl.us/programs/plan...ent_beach.html

There is no indication of a cave being associated with it, but according to USGS: “The seismic record at Crescent Beach Spring reveals a very well defined vent feature that has developed from sustained submarine discharge. The upper extent of the Crescent Beach Spring vent feature lies at a water depth of approximately 18 m, while the deepest point of the vent trough is at a depth of about 38 m. The areal extent of the bottom trough has a diameter of about 25 m, with at least one confined, steep-walled spring discharge opening”. Another interesting test they did was carbon dating to determine how OLD the spring water was and concluded: “Approximately, 10,450 years old. The age of the water suggests that Crescent Beach Submarine Spring has a deep flow system and a regional area of influence”. They believe that the water originates in the aquafies near Gainsville. Here is the USGS url: http://sofia.usgs.gov/publications/ofr/00-158/#fig3

Anyway, I thought this was pretty interesting - comments?