Washington DC, Feb. 20 -- Actor Daniel Radcliffe recently opened up about a frightening near-drowning experience while filming underwater scenes for the 2005 film 'Harry Potter and the Goblet of Fire', according to People.

During an appearance on the popular talk show Hot Ones, hosted by Sean Evans, the 36-year-old actor was asked about "close calls" on set.

Radcliffe recalled undergoing intensive dive training for the film's underwater sequences, which took six weeks to complete. Describing a tense moment during a mask-clearing exercise, he said he mistakenly removed his regulator without taking a proper breath beforehand.

"We were doing mask-clearing exercises, a very basic thing for learning to dive," he said. "You take a deep breat...