I put together some information on diving opertunities in the Florida panhandle from Panama City to Pensacola with Destin being in the middle.
Here is what is available on the Florida northern Gulf coast.
Almost all are within a 50 mile driving radius of Destin,Fl not counting the boat ride to the Empira Mica and Oriskany.
Feel free to add other potential locations.
http://www.vortexspring.com/
http://morrisonsprings.com/index.htm
http://www.ussoriskanydiver.com/
http://search.yahoo.com/search;_ylt=Apu ... =&ei=UTF-8
http://search.yahoo.com/search?ei=UTF-8 ... fr2=rs-top
http://uwex.us/070406.htm
http://vimeo.com/6371785