On the first day we show a video and explain diving theory, followed by water training in the pool. (iamkohchang.com)
We have a classroom session every day before the boat departs where we cover all topics of diving theory from physiology to marine biology, gas laws to equipment. (reefsafari.com)
You can review diving theory, remember how to use dive tables, practice assembling your equipme -LSB-...] (sunrise-divers.com)