well, i dont know but i think coz of the water deptand level!! but im not too sure so yeah!
Addition
Scuba cylinders are filled with very dry gas to prevent mositure from accumulating in them. Since the gas is very dry, your lungs will humidify the air you breath using your body's own moisture supply. Because you are humidifying the air from water within your own body, you lose moisture when you exhale and therefore you lose moisture due to breathing the dry air from the scuba cylinder and become dehydrated during a dive. On a side note, it is very important to stay hydrated since dehydration is a contributing factor to decompression sickness.
Some sports magazines that feature scuba diving include "Sport Diver," "Diver Magazine," and "Scuba Diving Magazine."
A scuba diver is a human who enjoys scuba diving. Therefore, a scuba diver has a spine and is a vertebrate.
I think you mean BUSEAR, which means to go scuba diving. El buseo = scuba diving. Buseador = scuba diver.
A scuba diver can purchase many things for scuba diving at the Air Hog online shop. They can purchase dive knives, dive lights, dive computers, and dive bags which will help them in scuba diving.
Scuba buoyancy is the most fundamental diving skill. Mastering buoyancy control enables a diver to use less effort to maintain his position while diving.
That is a Scuba diver flag, meaning "diver down."
Yes you can get a certificate just as easy as the next person for scuba diving.
To be a Scuba Diver you have to take a course in scuba diving which varies in cost depending on how old you are or where you are in the world .
Diver's use an aqualung when they go scuba diving.
they must come over the pressure
Scuba Diving International (SDI) is a SCUBA training and certification agency. It is the recreational arm of Technical Diving International, the world's largest technical diver training organization.SDI is the only diver training agency that requires students to have access to a modern dive computer on all dives during training from the very start. SDI is also unique amongst recreational diver training organisations in that it recognises solo diving as part of recreational diving, and offers a special training course relating to it.Every other major recreational diver training organisation mandates diving with a "buddy" at all times. SDI is a member of The World Recreational Scuba Training Council.
Most scuba diving courses can be completed in about 5 days or so. PADI's Open Water Diver course has an online portion or in-class work which takes a couple evenings, and two days of actually diving - SSI and NAUI have similar programs, but resorts tend to take a little longer than independent shops.