• 10 Videos, Slides, Films

• 2 DVDs

• 10 Animals
• 8 Ecology
• 8 Natural history
• 3 Polar bear
• 3 Whales
• 2 Animal migration
• 2 Biotic communities
• 2 Floods
• 2 Habitat (Ecology)
• 2 Salmon
• 2 Sardines
• 1 Adaptation (Biology)
• 1 Amphibians
• 1 Animal diversity
• 1 Aquatic ecology
• 1 Autumn
• 1 Biodiversity
• 1 Birds
• 1 Climatic changes
• 1 Coasts
• 1 Deep-sea animals
• 1 Desert ecology
• 1 Discovery and exploration
• 1 Elephants
• 1 Environmental conditions

• 10 Attenborough, David, 1926-
• 10 British Broadcasting Corporation
• 8 BBC Earth (Firm)
• 7 BBC Worldwide Americas, Inc.
• 3 Bass, Karen
• 3 Berlowitz, Vanessa
• 2 Anderson, Justin
• 2 Barton, Miles
• 2 Rees, Dan
• 2 Wanda Distribución de Films
• 1 Allan, Douglas
• 1 BBC Worldwide Americas, Inc
• 1 Bassett, Peter
• 1 Brosnan, Pierce
• 1 DeGruy, Michael, 1951-2012
• 1 Fothergill, Alastair
• 1 Holmes, Martha, 1961-
• 1 Jeffs, Kathryn
• 1 Linfield, Mark
• 1 Pearson, Hugh
• 1 Rosenthal, Rick
• 1 Stevens, Joe
• 1 Turner, Jeff
• 1 Warner Home Video (Firm)

• 10 English

• 8 Polar regions
• 7 Antarctica
• 2 Alaska
• 2 Botswana
• 2 British Columbia
• 2 Okavango River Delta
• 2 Serengeti Plain
• 2 South Africa
• 2 Tanzania
• 1 Earth (Planet)
• 1 Great Plains
• 1 Kalahari Desert
• 1 Tropics

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