★ 7.6
★ 6.6
★ 4.2
★ 7.3
★ 0.0
★ 7.1
★ 7.0
★ 8.0
★ 7.4
★ 6.8
★ 7.2
★ 6.9
★ 5.2
Documentary originally produced for BBC's television series "Natural World".
