Your Dream may become real one day:-
http://www.isracast.com/Articles/Article.aspx?ID=63Not saying you didn't do as you claim to have done... I mean there are a tribe of monks who claim they can walk through solid matter... Evolution happens at a slow rate... May it did happen, may be it didn't, only you know for sure...
Just don't go drowning trying it again...
There are a few creatures on the planet that don't have a great lung capacity like frogs and newts yet they stay underwater a great deal of time... I am not sure about you being able to breath in the water, but you may have air-ri-ated your blood stream by heavy breathing through your snorkle for almost an hour giving your brain and blood stream a healthy amount of air to function for longer than normal...
Saying that... I once heard of a guy that could breath out of his ears, and could also take water in through his mouth and eject it from his ears, nose and eyes and capture some oxygen within the water, not enough to stay under the water for longer than five mins but he stated he could take around 4 consecutive breath's as long as he kept them short... but he was in a highy oxygenated water tank, not a normal swimming pool, there would be very little oxygen for you to have taken in... In fact you breathing is near on impossible in those conditions even if you had gills (For a humans lung size).