MP3 players; MP4 players; underwater breathing apparatus; underwater cameras; underwater diving and decompression computers; underwater enclosures for photographic flash units; underwater photographic flash units; abdominal belts containing built-in speakers for purposes of transmitting music/sounds/educational material to a fetus and built-in pockets in which to carry audio transmitters; bags for underwater camera enclosures; bags specially adapted for underwater camera housings; breathing a...