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coryrc
4y ago
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That's the problem with the old ones, where you breathe in and out the same tube. That's fixed in these full-face masks.
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lisper
4y ago
As long as they are working properly. The problem is that the valves can fail (or not be properly designed in the first place), and then they become dangerous.
https://www.ktvu.com/news/recent-snorkel-deaths-prompts-inve...
treis
4y ago
New snorkels have a one way valve on the bottom. That vents the exhalation plus allows the water to drain when you're on the surface.
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