Not released in the USA until 1985, to home video and television, by
Sandy Frank under the title GAMERA. To that day, the only way to (partially) see it was the movie
Gammera the Invincible (1966), which used the special effects footage from the original Japanese film but most scenes involving human actors were replaced by new ones featuring an American cast. The Sandy Frank version, one of his usual dubbing jobs, was the whole original Japanese footage except for the opening credits sequence, replaced by English translated credits superimposed over an image of moving ocean water. Another difference is that in the Frank dub the names of some characters are Americanized (i.e. Toshio is renamed Kenny).