Full face snorkel mask how does it work

Are Full Face Snorkel Masks Safe? (Read This Before You Buy One)

Full face snorkel masks are dangerous because of the “dead Space” and the potential for the build-up of CO2 inside the mask. Deaths of snorkelers have been linked to full face snorkel masks, which is more likely to happen if you buy a cheap, poorly made mask or if these masks are used under duress.

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