The Australian Broadcasting Corporation produced four half-hour films about the Macquarie Islands. This episode of The Nature of Things compiles two of them. The first was originally entitled 'Man the Hunter, Man the Keeper.' The second was originally entitled 'The Dominant Male.' The program looks at the delicate ecological balance which must be maintained for the populations of elephant seals and seabirds on the Macquarie Islands. Narrated by Sir Edmund Hillary.[347] The other two episodes were compiled into a Nature of Things broadcast of 28 October 1981.