Second Sound Recordings

Chris, as the editor went away, with occasional input from me started to edit the sounds we recorded together and found we needed a few more, so after research we weirdly read that if you put a microphone in a condom it could create a interesting sound underwater, which as you see to the right we did try. It worked better than the Hydrophone did, things became clearer, with this technique we mainly recorded bubbles, for atmos sound as a 'base' for our piece.

"Historically speaking, underwater sounds are very muffled, as if water mutes high end.  This is of course exactly backwards from what water actually does.  But the audience has grown accustomed to hearing muffled sounds underwater, so they will expect that to some degree."
(http://filmsound.org/QA/underwatersounds.htm)

Here the writer says that underwater sounds are traditionally muffled by we have got used to it through film and other sound which is interesting,