BBC programme Human Planet has captured images of a remote tribe living in the Amazon rainforest for the first time.
Jose Carlos Meirelles, of Funai, said that his government needed proof of their existence to help protect them from the threat of illegal loggers.
He also said that the existence does not depend on them but the conscience of the outside world.
The footage can be viewed by following this link: http://www.bbc.co.uk/news/world-latin-america-12360013
