This analysis says that it's impossible:<p><a href="https://np.reddit.com/r/shittykickstarters/comments/4av9xw/triton_allows_you_to_breathe_underwater_100k_in/d13so58" rel="nofollow">https://np.reddit.com/r/shittykickstarters/comments/4av9xw/t...</a><p>It's been submitted many, many times:<p><a href="https://hn.algolia.com/?query=breathe%20underwater%20cry&sort=byDate&dateRange=all&type=story&storyText=false&prefix&page=0" rel="nofollow">https://hn.algolia.com/?query=breathe%20underwater%20cry&sor...</a>