The seasoned aqua men who own St. Mary's haven for Scuba aficionados also own the 6,000-square-foot building that houses the business. The diving specialists oversaw the construction of what would become their own self-contained underwater-experience facility. Adding to varied careers that encompassed naval service and cave diving, Bruce MacDougall and Chris Whitlock opened Diver’s Den in 2000, scheduling charters for open-water dives or practice dives in the company's heated, indoor pool. Over the last decade, Diver's Den has become a well-regarded source for both recreational diving instruction and professional training of rescue personnel.

The team of PADI-certified diving teachers at Diver’s Den regularly explores the region's offshore diving sites aboard its 36-foot Gulfstream boat, the Georgia Wreckreation. The team members once memorably aided the underwater investigations of famed wreck historian Richie Kohler (whose conquests have included the Titanic) as he dove off the Georgia coast to visit mysterious sunken wrecks and his snooty in-laws who live in Atlantis' biggest mermansion.