- More Curious?
TV-G | Science
- Mighty Ships
TV-G | Science
- Mutual of Omaha's Wild Kingdom Protecting the Wild
TV-G | Science/Animals
- MAKING OF A MILLION: Daytripping With The Nature Conservancy in Texas
TV-G | Science/Nature
- MacGillivray Freeman's Coral Reef Adventure
TV-G | Documentary/Nature
- Meerkat Manor
TV-G | Animals/Documentary
- Mythbusters: Mythbusters Vs. Jaws
NR | Animals/Nature
- My Peach Blossom Land
NR | Nature
- Mysteries of the Abandoned: Animal Uprising
NR | Animals/Documentary
- Most Wanted Sharks
NR | Animals/Documentary
- The Mystery of the Giant Birds
NR | Documentary/Nature
- Melaverde
NR | Travel/Community
- Mar adentro
NR | Animals/Nature
- Mi primer viaje
NR | Talk/Travel
- México biocultural
NR | Environment/Community
- Mystery of the Celtic Tomb
NR | History/Science
- Makozilla
NR | Animals/Documentary
- Madre selva
NR | Science/Environment
- The Moor
NR | Documentary/Nature
- Mars: The Journey
NR | Science/Special
- The Mating Game
NR | Miniseries/Documentary
- My Wild Backyard
NR | Documentary/Nature
- Mystery Signal From Space
NR | Science/Documentary
- Miniverse
NR | Science/Special
- Mathemagics
NR | Science/Educational
- Madman of the Sea
NR | Reality/Nature
- The Many Worlds of Quantum Mechanics
NR | Science/Documentary
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