Overview: Shortly after the Scientific Defense Guard had been assembled, ice burgs from the Antarctic region began to melt with one of them containing ancient monsters known as the Seagras
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First Air Date: Apr 04, 1979Last Air date: Mar 12, 1980Season: 1 SeasonEpisode: 50 EpisodeRuntime: 24 minutesQuality: HDIMDb: 7.80 / 10 by 5 usersPopularity: 50.43Language: Japanese