Chilling plea for help as man allows snake to eat him alive while recording the entire thing

The man who allowed himself to be swallowed by a snake made a chilling plea on camera while the stunt was unfolding.

For a 2014 episode of Discovery Channel's Eaten Alive series, US conservationist Paul Rosolie donned a carbon fibre armour suit fitted with breathing apparatus that was covered in pig's blood to attract a 20-foot green anaconda - one of the largest serpents in the world - as a documentary crew watched on nervously.

He was inspired to do so after witnessing first-hand the destruction of precious Amazonian jungle via of poachers, deforestation and illegal logging, and wanted to raise awareness.

Faced with the humongous predator, Rosolie, who has since appeared on The Joe Rogan Experience twice to talk about his gnarly travails, had his arm chomped at to begin with, before the heavy scaled coils engulfed him.

An hour later it was time to be eaten, and that's when he really started to panic.

Paul Rosolie wore a custom-made suit to protect himself from the snake (Discovery Channel)

"Stand by guys, I'm starting to feel like she's consuming me," cried out Rosolie, who'd 'felt the bone flex' in his arm during constriction, despite the protective suit.

"Guys, my face is down. I'm calling it, I need help!"

Luckily, he survived to tell the tale. Though if the experiment was successful, the consequences would have been pretty grim.

The star went on to write about his Eaten Alive involvement for The Guardian that same year, with particular focus on his disappointment over seeing the sensationalist footage that aired to the world, and not the conservation-heavy material they'd shot to accompany it.

"I am still at a loss to describe the sinking sensation I felt when I saw the final cut," Rosolie shared.

"The show that the editors had cobbled together contained very little ecological science, and included just the faintest mention of conservation (without any visual context). It was a crippling end to a project I had put so much into.

"The entire reason I went through with the show - stunt included - was because I thought it would be a chance to showcase the complex importance of the west Amazon and its creatures to a wider audience."

Paul Rosolie has since reflected on the stunt (ANDREJ IVANOV/AFP via Getty Images)

Rosolie continued: "If you look at Eaten Alive purely as a viewer, as most people must, it is difficult to dispute Salon’s take when they said, 'So, to recap: no redeeming conservation message and no actual eating. What exactly was the point of this?'

"What aired had very little to do with what my team and I actually experienced and filmed in Peru. It wasn't easy reconciling this schism - between what I had worked so hard on and what the final televised product was. Why was all this left out? That's a question for Discovery at this point, since we lobbied daily for it.

"In the end we were forced to face the fact that how the footage was used in the actual product, was not our prerogative, but Discovery's."