Purge vs. Non-Purge Scuba Diving Masks
This instructional video shows you the difference between purge and non-purge diving and Snorkeling Masks.
With a purge mask simply exhale through your nose and all the water drains away through a one-way valve. A dive mask without a purge (non-purge) requires a little more effort, but can still be purged with ease.
Each scuba mask has its advantages, so your choice should be based on your personal preferences.
Duration : 0:1:13
how come in pictures i see people with snorkels but they are like underwater ??
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