diverjed once bubbled...
Pete makes a good short point. tough to compare, Cold water divers may have to focus in on more adaptable skills with additional levels of equip for example, but warm water divers may log more dives annually because basically wherever they're living, it is diveable year round. Possibly every day.
A typical cold water diver will see his diving activity tend to cease in the hard, cold, winter months due to lack of feasibility.
Dude,
That's not a fair assumption. We dive year round here. The vis is NE can be much better in the winter, so many of us are more motivated to go out and dive in the colder months.
IMO, a good cold water is a "better" diver than a good warm water diver.
There's really nothing to adapt to in warm water except having much less gear including thin (if any) gloves. Water below 40degs is the real deal, if you aren't up to task you can get into trouble very fast.
The biggest problem with the guys I know is that they go from NE (cold/low vis) to a place like the Caymans and the diving is so easy compared to what they are used to that they go overboard and take too many risks (go real deep, etc.).
To compare rec diving in warm and cold water, I just think of what it takes skills wise to a do 100' wreck dive here in NE during Decemeber with snow on the boat and 10' vis in the water, vs. a 100' deep tropical reef dive in 80deg water with 150' vis. If you can do the cold water one, you can do the warm, but the opposite is not true.
Vacation divers, who dive once or twice a year ,dive warm water with no problems, try that in harsher, colder waters and you might not be around too long.