There are five unwritten rules of scuba diving that scuba divers find funny that come across as all wet to non-scuba divers. This brief story is not found in scuba diving books, yet it provides an in-depth look at scuba diving humor, getting to the bottom of the story of scuba diving humor.
Unwritten rule #1 suggests you should not start scuba diving to develop a tan.
Since scuba divers wear suits covering nearly their entire bodies, any tan they gain is found only in a few spots.
Unwritten rule #2 tells us to refrain from collecting cert cards, cards received upon completing a certification class in which an instructor teaches scuba diving skills in a controlled setting. Comedic scuba divers laugh at cert card collectors since they believe divers learn more by diving than by getting certified.
Unwritten rule #3 is not to trust battery run time estimates because battery life estimates assume the conditions in which most people use batteries, not cold water conditions and under pressure.
Unwritten rules #4 and #5 relate to the need to use the restroom after donning a wet or dry suit. Neither outfit provides a means of eliminating your eliminations without exiting the apparel. So, plan your food and drink accordingly to enjoy your time.