• 1 College Library
• 1 Wisconsin's Water Library

• 2 DVDs

• 18 Animals
• 18 Natural history
• 15 Ecology
• 11 Marine ecology
• 11 Physical geography
• 8 Marine biology
• 8 Ocean
• 8 Oceanography
• 7 Marine biodiversity
• 3 Marine animals
• 2 Biotic communities
• 2 Climatic changes
• 2 Coral reefs and islands
• 2 Desert ecology
• 2 Forests and forestry
• 2 Habitat (Ecology)
• 2 Ocean waves
• 1 Animal ecology
• 1 Animal migration
• 1 Autumn
• 1 Caves
• 1 Coasts
• 1 Deserts
• 1 Discovery and exploration
• 1 Environmental conditions

• 27 Discovery Channel (Firm)
• 26 BBC Worldwide Americas, Inc.
• 19 Fothergill, Alastair
• 11 Nihon Hōsō Kyōkai
• 8 BBC Earth (Firm)
• 5 Berlowitz, Vanessa
• 4 Brownlow, Mark
• 4 Byatt, Andrew
• 3 Cordey, Huw
• 3 Linfield, Mark
• 2 Barton, Miles
• 2 Holmes, Martha, 1961-
• 2 Jeffs, Kathryn
• 2 Rees, Dan
• 1 2 Entertain (Firm)
• 1 Allen, Penny, Dr
• 1 BBC America
• 1 BBC Worldwide Americas, Inc
• 1 Bass, Karen
• 1 Bassett, Peter (Documentary television producer)
• 1 British Broadcasting Corporation. Natural History Unit
• 1 Doherty, Orla
• 1 France télévision

• 29 English

• 11 Earth (Planet)
• 8 Polar regions
• 7 Antarctica
• 7 Arctic regions
• 1 Cold regions
• 1 Eastern Hemisphere
• 1 Everest, Mount (China and Nepal)
• 1 Himalaya Mountains
• 1 Northern Hemisphere
• 1 Serengeti Plain
• 1 Serengeti Plain (Tanzania)
• 1 Southern Hemisphere
• 1 Tanzania
• 1 Tropics
• 1 Western Hemisphere

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