[United States] : Discovery Channel, 2010

[United States] : Burbank, CA : BBC Earth : 2 Entertain Video ; Distributed in the USA and Canada by Warner Home Video, Inc., 2010

[United States] : Burbank, CA : BBC Earth : 2 Entertain Video ; Distributed in the USA and Canada by Warner Home Video, Inc., 2010

[Arlington, VA] : PBS, 2019

[London, England] : BBC, 2011
Widescreen edition.

[London] : BBC, 2021

[United States] : Discovery Channel, 2010

[Place of publication not identified] : [Publisher not identified], 2019
Widescreen edition.

[United States] : Burbank, CA : BBC Earth : 2 Entertain Video ; Distributed in the USA and Canada by Warner Home Video, Inc., 2010

[London] : Burbank, CA : BBC Earth/2 Entertain ; Distributed in the USA by Warner Home Video, 2010
[Discovery Channel version], Widescreen version

[United States] : Discovery Channel, 2010
Blu-ray version.

[United States] : Burbank, CA : 2 Entertain Video ; Distributed in the USA and Canada by Warner Home Video, Inc., 2010
[Original UK broadcast version]

[Arlington, VA] : PBS, 2019

[Arlington, VA] : PBS Distribution, 2019

[United States] : Burbank, CA : BBC Earth : 2 Entertain Video ; Distributed in the USA and Canada by Warner Home Video, Inc., 2010

[United States] : Burbank, CA : BBC Earth : 2 Entertain Video ; Distributed in the USA and Canada by Warner Home Video, Inc., 2010