I have been training for quite a while in a new classification of unassisted constant ballast. I have attached a link to a video log of my performance. This has been radified by the JFA (Jeremy Freediving Association) I achieved a depth of 5 meters which the JFA has verified as a world record. The file is about 800kb an in Windows Media format. enjoy. hehehhe
http://www.kivi.org/freediving/constballast.wmv
http://www.kivi.org/freediving/constballast.wmv