Tonight The Prince of Wales, The Duke of Cambridge and The Duke of Sussex attended the global premiere of "Our Planet" at the Natural History Museum in London.
Their Royal Highnesses were highlighting the multi-generational effort required to highlight the environmental challenges the world faces.
The new Netflix series is narrated by Sir David Attenborough who also attended the premiere.
TRHs met guests at a reception and The Prince of Wales gave a speech in which he said: "It has given me great pride to see how both my sons, in different ways have taken up the cause of restoring the balance of Nature."
The Duke of Cambridge founded “United for Wildlife” and The Duke of Sussex has long championed conservation work, especially in Africa as President of African Parks and Patron of Rhino Conservation Botswana.
The Queen’s Commonwealth Canopy was set up to protect forestry projects around the Commonwealth in Her Majesty's reign.
The Duke of Edinburgh was the first President of WWF until 1982 and then President of WWF-International from 1981 to 1996. He is now President Emeritus for WWF.
Find out more about the work of The Royal Family here