Walking the floor of the Diving Equipment and
Marketing Association’s annual show, held last November
in Orlando, I was struck by an interesting contradiction.
On one hand, there seems to be increasing growth in the
things that cost divers the most money: technical diving,
photography and travel. On the other hand, the number of
new divers entering the sport, at least in this country, has
been declining for years.
As one walked the corridors, technical diving leaped
  out: rebreathers, yokes for doubles, new wrecks being sunk,
  advanced training, BCDs that look like military gear. This
  is not cheap stuff.  
Then comes an array of photography, video housing,
  lights, not to mention digital cameras, that would baffle
  Jacques Cousteau.  
And of course there’s dive travel. Where not so long ago
  the booths were dominated by Caribbean venues, it seems
  today that every island in Indonesia is hosting a luxury
  lodge. But the prices in that part of the world, once a great
  bargain, reflect the slide of the dollar and the belief that
  divers can pay far more than honeymooners. To get there,
  you give up half a week traveling in both directions, not
  something the average Joe can readily do.  
It seems we’ve reached the age of the $1,000 regulator,
  the near $1,000 BC, and $300 fins, masks and drysuits.
  No wonder the young prefer mountain bikes and extreme
  sports that don’t cost much. Years ago, DEMA and the
  agencies decided to stop pushing diving as extreme, so it
  became a safe, family sport. Now it’s an expensive sport,
beyond the pocketbooks of many. 
DEMA tries to put a positive spin on the decline in
  certifications, announcing that entry-level scuba certifications
  in the U.S. remained “stable” from 2005 to 2006.
  According to its census figures, the 2006 number of
  162,605 declined by just 124 “certs” from 162,729 in 2005.
  The so-called stable numbers are a small consolation, considering
  the significant decline of entry-level certification
  since 2000. Totals peaked at 198,241 in 2001, dropped to
  183,934 the next year, declined further to 173,225 and are
  obviously continuing the downward trend. With fewer
  young people getting certified, the diving population is
  aging. But of course. They’re the only people with the time
  and money to go diving.  
As we reported in our “How Many Divers Are There?”
  articles, published in the May and June 2007 issues,
  DEMA’s census numbers may not be accurate. The training
  agencies are suspicious of each other and secretive
  about their membership numbers. NAUI, which supplied
  data for every census until the current one, apparently
  bailed out for political reasons. And the agencies themselves
  question the numbers and how they’re calculated.  
If you’re employed in the industry, this lack of growth
  may seem troubling. However, if you’re just a sport diver
  out for the best dives, you might not mind having fewer
  divers hovering over the reef next time you get wet.
But let’s think about China. PADI has 18 training centers
  there. Compared to the population in the U.S., China
  could eventually support about 5,000. Good for business,
  bad for the reefs. Go see the critters while you can.  
-- Ben Davison