Closed Circuit Rebreather Diving: Listen to the Silence…

…let it ring on.

I’m in the middle of a transition. I’m learning why closed circuit rebreather diving is an amazing new world and the benefits it brings. As I’m going through this process I’m learning what the reality of diving a rebreather means and how it affects me as a diver.

One of those truths is silence.

On open circuit scuba diving, the hiss of the inhale and the implosion of bubbles on the exhale is just something that is part of the package. It’s neither negative, or positive. It’s not something that can be controlled and open circuit divers learn to live with the cacophony.

One of the major benefits of diving with a rebreather is the silence. It can be deafening. It’s easy to talk through the loop and have conversations underwater. The first time I tried it I was shocked that I could hear another diver about 2 meters away. Of course, it’s not always easy to understand all the words but it’s possible.

Another benefit of the silence is that it’s easy to blend in to the environment. Getting close to the wildlife becomes second nature as they don’t sense your presence as much. The collapsing of the bubbles and hiss of the second stage regulators on open circuit scuba creates vibrations in the water and those vibrations travel a significant distance alerting all the wildlife you’re in the area. It scares them away, something foreign. With CCR diving, that’s not the case.

Next time you get the chance to try a rebreather, I’d say go for it. You might be shocked at how much you enjoy the silent world that awaits.



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