• 12 Videos, Slides, Films

• 3 DVDs

• 11 Animals
• 9 Ecology
• 9 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

• 11 Attenborough, David, 1926-
• 11 British Broadcasting Corporation
• 10 Discovery Channel (Firm)
• 9 BBC Earth (Firm)
• 7 BBC Worldwide Americas, Inc.
• 4 Berlowitz, Vanessa
• 3 Barton, Miles
• 3 Bass, Karen
• 2 Anderson, Justin
• 2 Rees, Dan
• 2 Wanda Distribución de Films
• 2 Warner Home Video (Firm)
• 1 Allan, Douglas
• 1 BBC Worldwide Americas, Inc
• 1 Bassett, Peter
• 1 Brosnan, Pierce
• 1 DeGruy, Michael, 1951-2012
• 1 Discovery Channel Canada
• 1 Fenton, George
• 1 Fothergill, Alastair
• 1 Holmes, Martha, 1961-
• 1 Jeffs, Kathryn
• 1 Linfield, Mark
• 1 Morris, Ashley
• 1 Pearson, Hugh

• 12 English
• 1 French

• 9 Polar regions
• 8 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

• 9 Science television programs
• 3 Video recordings for the hearing impaired
• 3 Wildlife television programs
• 1 Educational television programs
• 1 Nonfiction television programs
• 1 Observations
• 1 Television programs
• 1 Television series

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