Watch My Octopus Teacher

Emperor penguins walk seventy miles to breed in the Antarctic winter; Morgan Freeman narrates.

Activists film the dolphin hunt at Taiji with hidden cameras.

Two South Africans hunt for Rodriguez, a Detroit singer they think is dead.

Al Gore's slideshow on climate change; the cherry picker up the CO2 graph.

RKO’s adaptation of Rachel Carson’s book - she hated the script and never sold film rights again.

The first Disney True-Life Adventure feature: the Sonoran desert, and a scorpion square dance nobody has forgiven.

Disney on the American plains, and the bison birth that got the film briefly banned in New York.

Cousteau and Louis Malle invent the underwater documentary, in colour, from aboard the Calypso.