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2. Full-face diving mask - Wikipedia

   en.wikipedia.org/wiki/Full-face_diving_mask

   A diver in a pool wearing an AGA full face mask A diver wearing an Ocean Reef full face mask Head protection helmet for use with Ocean Reef full face diving mask. A full-face diving mask is a type of diving mask that seals the whole of the diver's face from the water and contains a mouthpiece, demand valve or constant flow gas supply that provides the diver with breathing gas. [1]

3. Snorkel (swimming) - Wikipedia

   en.wikipedia.org/wiki/Snorkel_(swimming)

   The integrated snorkel mask may be a half-mask, which encloses the eyes and nose but excludes the mouth, or a full-face snorkel mask, which covers the eyes, nose, and mouth. Early designs of snorkel-mask typically comprised a tube for breathing with an immersion-activated shut-off valve at the top, and the bottom opening into the mask, which ...

4. Diving mask - Wikipedia

   en.wikipedia.org/wiki/Diving_mask

   A diving mask (also half mask, dive mask or scuba mask) is an item of diving equipment that allows underwater divers, including scuba divers, free-divers, and snorkelers, to see clearly underwater. [1] [2] Surface supplied divers usually use a full face mask or diving helmet, but in some systems the half mask may be used. [2]

5. This best-selling snorkel stops water from leaking in when ...

   www.aol.com/best-selling-snorkel-stops-water...

   With this high-tech snorkel, you can dive down without holding a piece of plastic in your mouth. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ...

6. Snorkeling - Wikipedia

   en.wikipedia.org/wiki/Snorkeling

   The 1950s US Divers "Marino" hybrid comprised a single snorkel mask with eye and nose coverage and a separate snorkel for the mouth. [4] Full-face snorkel masks use an integral snorkel with separate channels for intake and exhaled gases theoretically ensuring the user is always breathing untainted fresh air whatever the respiratory effort.

7. Underwater diving - Wikipedia

   en.wikipedia.org/wiki/Underwater_diving

   The diver wears a full-face mask or helmet, and gas may be supplied on demand or as a continuous free flow. More basic equipment that uses only an air hose is called an airline or hookah system. [52] [50] [53] This allows the diver to breathe using an air supply hose from a high pressure cylinder or diving air compressor at the surface ...