“Today, we have lost a true hero for the planet, an inspiration to millions, and a dear friend,” DiCaprio’s statement began.

The Duke and Duchess of Sussex have paid tribute to chimpanzee expert and conservationist Dame Jane Goodall following her death at the age of 91.

“Jane Goodall devoted her life to protecting our planet and giving a voice to the wild animals and the ecosystems they inhabit,” DiCaprio said on Instagram.