WATCH: Castaway 'hours from death' found on desert island by Brit TV crew

A DESPERATE man had said his finally prayers and made peace with the fact he was about to die – alone and abandoned on a desert island.

The roofer, known only as Tremine, had been stranded for nearly three days in a rocky cove while fishing for oysters.

He had been trying to survive in the 43C heat but had quickly become dehydrated and was too weak too look for water or food.

CASTAWAY: Amazing footage from new nature documentary shows a castaway rescued by film crew

Amazingly a Brit TV crew were visiting the remote and uninhabited group of islands off the coast of Australia.

Presenter Jeremy Wade, who heads up wildlife documentary River Monsters, was in a boat searching for the rare giant grouper fish.

His team weren't actually supposed to be in that area but had moved after the waters became "too choppy".

"As we're heading to the fishing grounds we encounter a situation which stops us in our tracks," Jeremy said.

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RESCUE: The desperate castaway begs for water after being stranded alone for days

They spotted a blue cooler floating in the water and someone cracked a joke about Tom Hanks in Castaway "popping out at any moment".

It was then that Tremine ran out from a cave waving his arms and screaming for help.

CLOSE CALL: The rescued roofer known as Tremine said he believed he was about to die alone

Crew member Stephen Shearman told InsideEdition: "He had said his last prayer.

"He was prepared to die and meet his maker."

LIFESAVERS: The crew quickly rehydrated Tremine before taking him away for medical treatment

Tremine was hauled into their boat and rehydrated.

"One more day on the beach and he would have died," Jeremy added.

The footage has only just been released but the incredible rescue took place last year.