Hello, new to the board, but have been watching and trying to learn for a couple of weeks now. Taking NAUI scuba classes, and just did our first pool class last night. I was physically not ready for the swim (220 meters I think). Well got to work this morning and was discussing it with some co-workers that are certified and they looked at me like I was crazy when I told them we had to swim that far without stopping. My question is how many people had to swim that far and is there that much differences in dive class for beginners? I know why we swam, but just wondering what the differences are. Thanks-Mustang