John Bedford Lloyd in The Abyss (1989/1993)

The Dive

Bud prepares to dive.

Jammer and Hippy help lower Bud into the pool.

Bud's POV as he sinks.

JBL: "They would say, 'Okay, Ed. Today, we're going to take this thing and put it on your head. You can't breath. And we're gonna to fill it up with pink water.'

"[To other actors]'And you're going to pretend to be amazed at watching Bud Brigman, your commander, breath in the fluid breathing.'

"I mean, what's the [acting] challenge? There's Ed, our friend, walking into the edge of Moonpool and jumping in. It was extraordinary. I mean, there was no...the line between movie and reality didn't exist."

Bud dives...

And dives...

And dives...as One Night monitors.