News

New Grotto Map Available Over the past several weeks, we and several of our guests have been involved in a joint project to create the most accurate map to date of what divers can see and experience in the Grotto. You can download the most current version of this map in Adobe Acrobat Portable Document Format (PDF), as well as read about the techniques we used to create it. More…

The New Docks Are In! All it took was an hour and one really big crane. And you will not believe the difference they make. See pictures and read the details.

CDA Takes Over Grotto: Commercial Diving Academy will continue to make the Grotto readily available to qualified Guides, by appointment, plus use the Grotto to train its own students. More…

PSDA Named NAUI Tec Center: Professional Scuba Diving Academy (PSDA), a division of 40 Fathom Grotto’s parent company, Commercial Diving Academy of Jacksonville, has been named an official NAUI Technical Diving Training Center. PSDA uses 40 Fathom Grotto as its primary recreational, technical and leadership-level training site. More…

SSi Chooses the Grotto for Tech XR: This year, SSI is making a concentrated effort to provide instructor-level training for its new Technical Extended Range program available to its member stores. And their location of choice for the eastern United States is 40 Fathom Grotto. More…

Truly Bizarre Stories: In all honesty, we have no idea where some folks are getting their information about the Grotto these days. Since Commercial Diving Academy took over operation of the Grotto, we’ve heard some fairly Loony Toons — stuff straight outta World Weekly News. If you are confused about some of the stories you’ve heard, we have a page with Just the FAQs…