Terror Beneath the Sea (1966)

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When a mad scientist creates a world of cyborgs in his underwater city, it takes a united effort between the American and the Japanese scientists to foil his plan to dominate the world. The cyborg transformation boasts particularly good special effects as the humans become monsters. ~ Tana Hobart,… More When a mad scientist creates a world of cyborgs in his underwater city, it takes a united effort between the American and the Japanese scientists to foil his plan to dominate the world. The cyborg transformation boasts particularly good special effects as the humans become monsters. ~ Tana Hobart, Rovi