diving

diving as well called scuba diving is the action to immerse in water bodies like the oceans, lakes, rivers, etc. either with a professional, recreative or an investigative purpose.

the diving can be with or without breathing equipment, to the diving without equipment is best known as apnea that is like diving with lung.

diving have 3 rules that you have to follow if you don't  want to die

1. never stop breathing 
2. never dive alone
3. check your level of air constantly

the diving has 4 levels   

Open water diver: that is the most basic level, you in this level are going to learn the most basic things of a diver like how to breathe with the regulator, (that is the thing that we use to breathe underwater) fix your equipment, etc 

Advance diver: that is the second level you learn things like: how to manipulate the compass to know ornament, what to do in case of danger like run out of the air and things like that and the most important is how to dive bat night

Rescue diver: a rescue diver is the one in charge of pay attention to his partners of diving and in case of something went wrong hi will save the life that is in danger

Master diver: is the one who transmits the knowledge to the others is like the teacher however he can't certificate people the only one who can is the someone who is certificate like an instructor