Documentary.
16x9 widescreen.
Originally produced for television broadcast as a Nova/National Geographic special.
Program content: ©2015.
Camera, Ernic Kovacs, James Ball, Jon Betz ; underwater camera, Kenneth Corben, David Gruber ; edited by Salvatore Vecchio ; music, Chris Beaty ; executive producer, Jared Lipworth ; managing director, Alan Ritsko ; senior executive producer, Paula S. Apsell.
Narrator, Salvatore Vecchio.
DVD; NTSC, Region 1; widescreen presentation; stereo.
In English with optional English subtitles.
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