Let me speak as a dive pro, and a guy who has logged every dive since my first in 1997.
Pool dives are not dives. They should go in some other record log, but not as dives. A dive is done in any open water conditions: ocean, lake, river. Neither the duration or depth impacts whether it is a dive. It is a dive if you breath air (or a variation thereof) from a pressurized tank, below the surface of the water. While I prefer dives, even training dives, to be 20 minutes or more, there is no requirement for such. I do log the length of each dive, as not only number of dives but hours of underwater time are important data to maintain for professional training and for insurance purposes in the event something less than ideal happens in the future. The average of time of all dives I have ever done is just over 48 minutes. My wife's average is about 20 seconds more, a competition that will never end, but which I have trouble catching up because she does nearly every dive I do with me. Anyway- go diving whenever you can- pool,lake, or ocean. be an active diver. Active divers are safe divers.
DivemasterDennis, scubasnobs.com