Haruo Nakajima
The underwater sequences were filmed on an indoor soundstage where the Godzilla and Ebirah suits were filmed through the glass of a water-filled aquarium, with some scenes of the Godzilla suit shot separately underwater as well. Haruo Nakajima (the suit performer for Godzilla) wore a wet suit under the Godzilla suit for every scene that required him to be in the water, which took a week to complete the water scenes, Nakajima stated, "I worked overtime until about eight o'clock every day. Even though I wore a wet suit under the costume, I got cold. But I never got sick, because I was so tense during the filming."