"I'm Paul Rosolie and I'm about to be the first person to be eaten alive by an anaconda," he said yesterday in a 30-second video on Twitter promoting a new show, "Eaten Alive," to be telecast on the Discovery Channel on December 7.
A longer teaser posted by the network on YouTube shows Rosolie donning "a custom-built snake-proof suit" to enter the belly of the fearsome reptilian beast head-first.
On his Twitter feed, Rosolie told his followers: "If u know me - I would never hurt a living thing. But you'll have to watch #EatenAlive to find out how it goes down!"
Social media and tabloid websites jumped on the story, but animal rights group PETA, fearing for the welfare of the snake, demanded that Discovery pull the show.
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"Whatever the filmmaker has planned, the snake will likely pay the ultimate price, as animals usually do when they're used for entertainment," it said.
Earlier this year, Rosolie -- who divides his time between New York, India and Peru -- published a book about his adventures, titled: "Mother of God: An Extraordinary Journey into the Uncharted Tributaries of the Western Amazon."
In 2013 he won a short-film award at the UN Forum on Forests for his documentary "An Unseen World," according to a biographical blurb on the website of publisher Harper Collins.
But PETA dismissed him as "a pseudo 'wildlife expert'."