Not Rated | | Sci-Fi
An engineer, a psychologist and several other disparate types take part in an experiment to see if people can live for extended periods of time in a city built under the ocean.
Although the film was shot in color, producer Alex Gordon stopped in a theater where it was showing and was astounded to see that it was being shown in black and white. He checked with Columbia Pictures, the distributor, and was informed that all release prints of the film were in black and white. Gordon could not get anyone at Columbia to explain to him why the film was released that way. Later, when the film was syndicated to television, the prints that were sent out were in color. Gordon couldn't get Columbia to explain that, either.
When the moray eel and octopus were fighting, the tentacles of the octopus were obviously stuck on the aquarium glass through which the scene was filmed.
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