The broadcaster and naturalist first appeared on our screens more than 70 years ago and has had a huge impact on the natural world. Find out more here.

After living for nearly a hundred years on this planet, I now understand that the most important place on Earth is not on land, but at sea.”"Today, it is in such poor health I would find it hard not to lose hope were it not for the most remarkable discovery of all,

The naturalist has been on our screens for more than seven decades, presenting TV programmes including Planet Earth and Blue Planet.