how do divers clear their masks when water leaks in? especially in the case of the 13 thai boys rescued from the caves

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I have just been watching Thirteen lives – the film about the cave rescue of the 13 young boys in Thailand who were totally sedated before being taken hours under water.
It got me thinking that when I go snorkelling i always get a bit of water leak into my mask and have to come up and clear it out so i don’t breath water in.
Is this something that happens to scuba divers, if so how do they deal with it, and in the case of the boys how would the divers accompanying them have cleared the boy’s masks ?
i would also like to say what an incredible job done by all those involved.

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Anonymous 0 Comments

First you get a well fitting mask so it doesn’t leak too much. Second you hold the top of the mask firm to your face and exhale through your nose to force the water out. Third, with a lot of experience you learn to put a small amount of positive pressure into your nose to pure the water a little bit at a time as you dive.

TLDR; force air out your nose while holding the top of the mask to clear water out. After many dives it becomes second nature.

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