About Revisions 40 Fathoms Grotto 9487 NW 115th Ave, Ocala, FL 34482 (352) 368-7974 | More Info Max Depth: Over 150ft/46m Average Viz: 31-35ft/9-11m Entry Type: Shore Bottom Composition: Clay/Muck Aquatic Life: Might See Something Spring: 66-70°F/19-21°C Summer: 66-70°F/19-21°C Fall: 66-70°F/19-21°C Winter: 66-70°F/19-21°C 4/17/2009 9:23 PM

World-famous 40 Fathom Grotto is a naturally formed sinkhole located in the heart of north-central Florida’s thoroughbred racing country. It is the only place in the eastern United States where you can train, dive or play in depths of up to 200 feet or more and still:

Remain completely in open water, if you choose. Dive year round in calm, fresh water. Be largely unaffected by wind, waves, tides, currents.

It’s no wonder then that dive educators from around the world consider the Grotto to be the Ultimate Training Facility.