Although an air space, your lungs are large and flexible and not very prone to a squeeze. As a scuba diver, you automatically equalize your lungs as you breathe continuously from your scuba equipment. When you skin Bali scuba dive, holding your breath, the pressure compressing your lungs has no effect, provided you started with a good breath. They drop in volume during descent and re-expand during ascent to nearly their original volume when you reach the surface, havingused an inconsequential amount to equalize other air spaces.

If you were to breath hold Bali scuba dive starting with empty lungs (you exhale, then dive) several metres/feet, or descend really deep (like 60 metres/200 feet) holding your breath. there's a theoretical possibility that you could squeeze your lungs - but these are rather unlikely sit nations for most scuba divers.Another air space you might need to equalize is a dry suit, which holds a layer of air around your body for maximum warmth. If you're going to use a dry suit as part ol'this course. Your instructor will show you how to equalize it. If you're not familiar with them, Section Two describes dry suits in more detail.

The air spaces in your ears are the most aensitive to increasing pressure, but assuming you're in good health (no head cold or allergy congestion! you can easily equalize them. To do this, pinch your nose shut and gently blow against it with your mouth closed; this directs air from your throat into your ears and sinus air spaces. Another technique is swallowing and wigglin the Jaw from side to side. A third technique combines these allow and wiggle your.Jaw while hlowing gently against your pinched nose.