David Attenborough has described as the early days of his career as "the best time of my life".
Speaking on as part of the documentary film, A Life On Our Planet, he said: "Wherever I went there was wilderness. Sparkling coastal seas, vast forests, immense grasslands. You could fly for hours over the untouched wilderness.
"And there I was, actually being asked to explore these places and record the wonders of the natural world for people back home.
"To begin with it was quite easy. People had never seen pangolins before on television, they had never seen sloths before, they had never seen the centre of New Guinea before.
"It was the best time of my life."
The film will premiere in cinemas on September 28 before launching on Netflix at a later date.
