Originally Posted by
emalvick
Not to prolong the subject, but there is no oxygen down in there. It only takes a minute or two to suffocate and die.
I know that there's no oxygen down there. Still, you should be able to hold your breath for a couple of minutes and it takes a couple more for you to suffocate so that's 3 to 4 minutes total to root around for your phone. You'd think they would come up for air before it got that critical.
And it's not like you would have to go in head first to try and find it. It would be bad enough to stick your arm in there without having to go for the whole body experience!