Listing the nature programs narrated, and sometimes written and produced, by the extremely industrious David Attenborough would take about all the space I have here. Just listing the major ones — the Frozen Planets, the Blue Planets, the Planet Earths — would be a stretch. Within the last year, he’s added 15 more hours with the highly praised “Our Planet” for Netflix and now “Seven Worlds, One Planet,” showing on four cable networks — AMC, BBC America, IFC and Sundance — beginning Saturday.

For the large and fiercely devoted fan club of Attenborough and the BBC Natural History Unit, which produced it, I’ve done my job by noting where and when “Seven Worlds, One Planet” can be seen. Nothing else really needs to be said.

It’s interesting, but not essential, to know that the title refers to earth’s seven continents, each of which gets an episode. Otherwise your confidence that there will be fascinating and beautiful footage of animals shot from every angle and distance, edited into short scenes that will make you gasp, laugh and cry, backed by the melancholy authority of Attenborough’s narration, is not misplaced.