‘Harry Potter’ Star Recalls Near-Drowning Experience on ‘Goblet of Fire’ Set: ‘Get Me Out of Here'

In the years that the cast of Harry Potter spent filming the beloved series, star Daniel Radcliffe admits there was one particularly scary moment.

During a recent taping of Hot Ones that premiered on Thursday (Feb. 19), Radcliffe looked back on working on the 2005 flick, Harry Potter and the Goblet of Fire, which involved six weeks of filming underwater scenes.

The arduous process included intensive training during which Radcliffe admits he made a mistake and almost drowned.

“There was a time when we were training for it…we were doing like mask-clearing exercises, a very basic thing for learning to dive and you take a deep breath, and you take the regulator out and then when you put it back in, you gotta keep that breath because you go to blow the air out,” he explained.

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He went on to explain, “I remember I took the thing out once and I was like, didn’t breathe. Don’t have any breath to clear this when I get it back on. And I put it back in and I was like [motioning upward] which is ‘Get me out of here,’ that’s my drowning signal.”

While Radcliffe was able to safety make it to the surface, he says the stunt coordinator Greg Powell ensured that the actor never made that error again.

“He goes, ‘Well, you won’t make that mistake again!’ And I was like ‘Oh, absolutely right,” he said.

Filming went on for several more weeks and Radcliffe says he later learned that they “averaged five seconds of usable footage per day.”

“That was one of the things that you go like, ‘Yeah, I’ll never, never do something like this again,'” he concluded.

You can hear all that Daniel Radcliffe had to say below.