Critics score:
Reviews provided by RottenTomatoes
John DeFore, Hollywood Reporter: This mainstream theatrical release is inferior to its shorter educational-film cousin. Read more
Derek Adams, Time Out: There's little we haven't seen before, including farting elephant seals. Read more
Chris Packham, Village Voice: The film is a klutzy rearrangement of documentary footage into a forced story arc narrated in first person by Tim Allen. Read more