DO NOT USE A LONG HOSE LIKE A SNORKEL! I thought the same thing and a discussion taught me a lot. The determination was your lungs do not have the capacity to move the volume of air inside the extended tube and you will just be inhaling the air that you just exhaled over and over again. You would eventually pass out.
I guess in theory, you could have two hoses. One for inhaling and the other for exhaling, but how would you keep the water out of both of them?
I guess in theory, you could have two hoses. One for inhaling and the other for exhaling, but how would you keep the water out of both of them?
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