Bali scuba Dive health also includes taking care of yourself in other ways - including keeping your skills and knowledge sharp. The best way to do this is to be an active scuba diver - Bali scuba dive - this helps maintain your Bali scuba dive skills. Take part in new underwater adventures, like Bali scuba dive travel and special activities and courses. You'll have fun while developing new Bali scuba Bali scuba dive skills and improving and refining those you have. If possible, swim with fins in a pool regularly to keep your leg muscles toned - and it's a good aerobic exercise. Practice the skills you learn in this course frequently.

If you're away from Bali scuba diving for awhile, no sweat - it happens to all scuba divers once in a while - refresh your Bali scuba dive skills and knowledge. Review this manual, the Open Water scuba Diver Video and practice your skills with a PADI Bali Scuba Divemaster, Assistant Instructor or Instructor. The PADI Scuba Review program refreshes your knowledge and skills, and it's quick and easy - one evening or a morning is usually all you need

Tune up, Bali scuba dive in


If you're away from Bali scuba diving for awhile, no sweat - it happens to all scuba divers once in a while - refresh your Bali scuba dive skills and knowledge. The PADI Scuba Review program refreshes your knowledge and skills, and it's quick and easy - one evening or a morning is usually all you need.

If you're a woman, you have some special health considerations, including menstruation and pregnancy. As long as menstruation doesn't normally keep you from participating in other active recreations, there's no reason why it should keep you from Bali scuba diving either. Bali scuba Diving while pregnant is another story. There's not much known about how Bali scuba diving may affect a developing fetus. It's generally agreed that it's not worth the risk; so discontinue Bali scuba diving while pregnant, or if you're trying to become pregnant you're breathing now. The filling process filters the air to remove chemical and particle impurities, and it removes most of the moisture, which can damage scuba tanks and cause other problems

The first possible problem involved with breathing air under pressure (underwater) involves contaminates that aren't supposed to be there. This problem is rare, but possible.

Compressors for filling scuba tanks (breathing air) use special filters and separators to keep contaminates such as carbon monoxide or oil vapor out of your breathing air. This is important because pressure proportionately increases the effects of a gas you breathe, so that traces of contaminants that would be harmless at the surface can be toxic underwater.

Contaminated air generally results from a problem with the compressor or its filtering system, and as a result often tastes and smells bad - but it can also be odorless and tasteless. A scuba diver breathing contaminated air may experience headaches, nausea, dizziness and even unconsciousness. A scuba diver afflicted by contaminated air may have cherry-red lips and fingernail beds, though this may be hard to see underwater.

Give a person suspected of breathing contaminated air fresh air, and administer oxygen if available. In severe cases, rescue breathing may be necessary. The scuba diver should have medical attention in Breathe easy all cases. 

Fortunately, as mentioned, contaminated air is rare as long as you buy your air from reputable air sources, such as professional Bali scuba dive stores. These stores recognize the seriousness of contaminated air and have their air checked frequently to be sure of its quality. Don't fill your tank from a compressor or other air source that isn't intended specifically as a breathing air compressor system; for example, you wouldn't use industrial air systems such as those used for filling tires or powering sandblasters. To avoid contaminated air, be certain you have your tanks filled only with pure, dry, filtered compressed air from a reputable air station.

Even though you have a proper air source fill your tank, if the air tastes or smells bad, don't use it. If you feel ill or get a headache during a Bali scuba dive, end the Bali scuba dive immediately. If you suspect you may have contaminated air in your tank for any reason, save the air for analysis and don't Bali scuba dive with it.

There's another way to suffer contaminated air poisoning, and that's by breathing exhaust fumes aboard a bout. Try to stay out of boat's exhaust and in fresh air.

Because you need oxygen to live, it may seem strange that oxygen can become toxic if you breathe it under pressure. But in fact, you can get "too much of a good thing" - if you were to fill your scuba tank with pure oxygen instead of compressed air, you could suffer oxygen poisoning in water as shallow as 6 metres/20 feet. This is why you should never have your tank filled with pure oxygen.

The 21 percent oxygen in compressed air can also be toxic, but not until you descend well past the recommended maximum limits for recreational Bali scuba diving. So when Bali scuba diving with air within recreational depth limits, oxygen toxicity isn't an issue.

Recreational scuba divers sometimes use enriched air (also known as "enriched air nitrox" or "nitrox"), which has more. than 21 percent oxygen. Enriched air has some advantages regarding how long you can stay underwater at a given depth, but you can have oxygen problems using it within recreatioral depth limits. For this reason, enriched air Bali scuba diving requires special training and some special equipment requirements (to avoid combustion problems possible with high oxygen levels); reputable Bali scuba dive centers will not, provide enriched air without proof of enriched air certification.

So, to avoid oxygen toxicity problems, don't have (or try to have) your cylinder filled with enriched air, unless you're properly trained and certified. Don't use a cylinder that's marked as being an enriched air cylinder, (again, unless you're properly trained and certified).

Nitrogen Narcosis


Although nitrogen has no direct influence at the surface, that changes as you breathe it under sure. Underwater, at depths approaching 30metres/100 feet, nitrogen has a noticeable intoxicating effect that intensities as you go deeper.


A scuba diver affected by nitrogen narcosis behaves as you might expect someone to behave if intoxicated. Narcosis impairs the scuba diver's judgment and coordination, and may create a false sense of security, cause disregard for safety and other foolish behavior. Nitrogen narcosis can make a scuba diver feel anxious or uncomfortable, which can lead to panic or other poor decisions.

Signs and symptoms include paralysis, shock, weakness, dizziness. numbness, tingling, difficulty breathing, and varying degrees of joint and limb pain. In the most severe cases, unconsciousness and death can result.

Decompression sickness can also manifest subtly. Symptoms can include a mild to moderate dull ache, usually but not necessarily in the joints, mild to moderate tingling or numbness, usually, but not necessarily, in the limbs. Weakness and prolonged fatigue may result from DC'S. Decompression sickness symptoms can occur together or individually, occur anywhere in the body, and may be accompanied by lightheadedness.

Symptoms usually occur anywhere from 15 minutes to 12 hours after a dive, though they can occur later. They tend to come on gradually and persist, though they can be intermittent. Regardless of the severity of the symptoms. consider all cases of decompression sickness serious.

Lung over expansion injuries and decompression sickness can produce very similar signs and symptoms, even though they result from two different causes (holding the breath versus exceeding time and depth limits). The dive medical community lumps DCS and lung overexpansion in, jury under the clinical term decompression illness (DCI). They do this because the first aid and treatment are identical for both, and there's no need to distinguish between them when assisting a diver. 

If a diver has symptoms of decompression illness, or isn't sure, the diver should discontinue diving, seek medical attention and consult a dive physician. As you learned in Section Three, some areas have special diver emergency services that provide consultation and coordinate with local medical services to assist the diver.

The dive medical community lumps DCS and lung overexpansion injury under the clinical term decompression illness (DCI). They do this because the first aid and treatment are identical for both, and there's no need to distinguish between them when assisting a diver.

First aid for decompression illness includes having the diver lie down and breathe oxygen. Contact local emergency medical care, and the local diver emergency service (if available - or the closest recompression chamber). Your instructor will tell you the emergency contact information for your local diving areas.

Signs and symptoms of DCS include limb and joint pain, tingling, numbness, paralysis, shock, weakness, dizziness, difficulty breathing, unconsciousness and death. Decompression illness (DCI) is a clinical term for both decompression sickness and lung over expansion injuries.A diver with DCI should receive emergency oxygen, rescue breathing and CPR if necessary, and will require treatment in a recompression chamb

Almost all cases of decompression illness require treatment in a recompression chamber, during which the diver is put back under pressure to help the body absorb bubbles in the tissues. This treatment usually takes several hours, requires the use of pure oxygen, and often drug therapies. Don't allow a diver suspected of having decompression illness to go back underwater. Attempts to treat a diver underwater typically end with worsened symptom and disastrous results, and only delay getting to proper treatment.

Although decompression sickness is a serious condition, both painful and potentially life threatening, it is avoided by properly following the established safe time and depth limits of dive tables and dive computers. Lung over expansion injuries are also serious, painful and potentially life-threatening, but avoided by breathing continuously and never holding your breath. Additionally important in preventing decompression illness (both DCS and lung over expansion injuries) is a slow, safe ascent rate with a stop for safety at 5 metres/15 feet. You'll learn more about this stop in Section Five.