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Watch Journey to the Microcosmos Season 7 Episode 4 Online

  • 5/10
  • COUNTRIES: United States of America
  • Subtitles: English

There’s a few things that give Beggiatoa away. The first is the simple serpentine shape of their bodies, and the second are those little dots inside of them. They look like bubbles, but they’re actually sulfur granules.