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Scuba diving is a sport in which you can lose yourself to the beauty of
the underwater world and escape gravity for a short time.   You can wander
among kelp forests or swim with sleek noble sharks.   You can find a
fortune in Spanish ducats or lose yourself in the beauty of the underwater
realm.   Some may say though that diving is an extreme sport and that it is
too risky for anyone, it's just for the wild hooligans.   Scuba Diving is
a safe and enjoyable hobby despite the small risk involved.   Haven't you
ever wondered what it was like to swim with the fish?   Or see why all of
those people would want to were all that funny looking gear and go under
the water?
The going below the water is little like being above the water.
While underwater there are forces and laws that dictate how your body will
respond to being under so much pressure.   The first rule regarding the
pressure water puts on the air spaces in your body is Boyles Law.   It says
that as the pressure increases on a given mass of gas the volume will
decrease.   This rule explains the popping sensation you fell when you go
up in an air plain and the squeeze you feel as you go under water (The
Skin Divers Bible 37, 41).   Another law is Dalton's law of partial
Pressure.   It says that pressure of mixed gasses is equal to the pressure
exerted by the individual gas.   So if a mixture of gas is say 5% carbon
dioxide then it would account for 5% of the total pressure of the gas,
because of this law the concentration of harmful gasses must be less when
you are under water otherwise you can be poisoned or experience the
effects of the gas that would only occur at a higher concentrati!
on at sea level (47).   And the last major law that governs you while
underwater is Henry's law.   It simply states that you can dissolve more of
a gas into a liquid at higher pressure and the opposite when you release
some of the pressure.   It is like when you open a bottle of pop, the gas
and pop are...