Also taken from a taped voice recording, this sounds a bit like a "chomping" sound or perhaps a very strange ...
Another underwater sound i made for the same installation using lots of different samples (copyrightfree!) and sound editing.
Just underwater bubbles like diving or drowning
A wooden door-being-kicked-open sound. A composite of three other FreeSound sounds: http://www.freesound.org/people/ttiimm54/sounds/94744/ http://www.freesound.org/people/RutgerMuller/sounds/103996/ and http://www.freesound.org/people/Srehpog/sounds/31623/
The sound of kicking in a door. Based on CC0 http://opengameart.org/content/35-wooden-crackshitsdestructions Made for http://dnt.dnteam.org/
Sound of a nervous person breathing, with reverb
Man nervously breathing. I used it for ADR of a guy before he got shot.
A few big gulps of water recorded with a stereo microphone.
A gulp. Might be good in a cartoon or something!
Just a recording of me screaming. Recorded on a AT3525