Nearly twenty years ago, conventional wisdom was that 3.5 million Americans were active sport divers, defined then as divers making at least three dives year, which isn’t much activity. That figure came from an estimate by one individual, John McAniff, the sole employee of the National Underwater Diving Accident Data Center (NUDADC) at the University of Rhode Island, which soon afterwards got scooped up by the Divers Alert Network (DAN). However, Robert Monaghan, a NAUI and PADI instructor with doctoral training Today, in the 21st century, you’d expect the industry to have a better handle on things, right? Well, not so fast, Buck Rogers. Numbers are still hard to find and certify because dive organizations are tight-lipped about their data, refusing to share it with the public and even with each other. “The industry is under-reported,” says Mark Young, publisher of Dive Center Business. “We don’t know much about ourselves.” Renee Duncan of DAN told us, “There’s really no true number for certified divers because this is not a regulated industry, so it will always be a squishy figure. We’ve quoted the 1 to 3 million number on our diving fatality reports.”
Dive organizations are tight-lipped,
refusing to share their data with the
public and even with each other
Until this spring, PADI’s website addressed the question “How Many Active Divers Are There in the US?” by noting that it is one of the most frequently asked questions PADI America receives. The most recent estimates posted (for the calendar year 2000) ranged from 1.6 to 2.9 million, but they were recently taken off the site (PADI did not respond to multiple phone calls we made to discuss these numbers). Nor does NAUI, SDI/TDI or SSI list figures on their web sites.
in statistical modeling, argued in a series of Undercurrent articles that the active diver population was actually closer to 700,000. Subsequently, McAniff told Undercurrent that the 3.5 million number was “purely my guesstimates and have been arrived at without any insider information, and may well be inaccurate.”

