Daniel Craig, Harrison Ford, the Dalai Lama and football legend Pele are among the prestigious line-up in a YouTube film launched on Tuesday to promote a campaign to save the rainforest adopted by Britain's Prince Charles.
The 90-second film shows Prince Charles, 60, and his two sons, the princes William and Harry, joined by actors and celebrities in their quest to raise people's awareness for the need to end tropical deforestation.
Viewers are urged to do their bit by signing up for the cause on the website www.rainforestSOS.org.
James Bond star Daniel Craig, US actors Harrison Ford and Robin Williams are among the line-up, reinforced by the Dalai Lama, the spiritual leader of Tibetans, with whom Prince Charles has forged a personal friendship.
Singer Joss Stone and former Brazilian football star Pele are also key players, along with children from around the world.
"One of the internet's strengths is that it can enable diverse communities to come together to ensure that everybody's view and actions can really be made to count," a statement from Prince Charles' office said.
Each individual appears alongside an animated frog, a symbol of the rainforest designed by Framestore, the Oscar-winning creators of The Golden Compass.
In order to make the campaign truly interactive, a digital application enables supporters to create their own "mash-up" versions of the film in which they can appear alongside the frog and the well-known figures.
The film, which was going out on a variety of websites at 1700 GMT Tuesday, shows William and Harry urging the planet to be saved "for all of us".
"Our aim, with your help, is to build an online community to call, from the bottom up, for urgent action to protect the rainforests, without which we will most certainly lose the battle against catastrophic climate change," Prince Charles is heard pleading.
Harrison Ford, of Indiana Jones and Star Wars fame, said on Tuesday he believed it was "our moral responsibility to protect the environment...for future generations and our children".
"I was prepared to support such an important issue," added Craig, while Pele said he believed the video was an opportunity to "think about the future and new generations".