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Watch Modern Marvels Season 5 Episode 15 Online

  • 8.5/10
  • COUNTRIES: United States of America
  • Subtitles: English

From hollow-reed snorkels to mini-submarines equipped with video cameras, curiosity compelled inventors to conceive of innovative devices to dive ever deeper into earth’s last frontier. Explore the ocean floor using the latest in technology, and examine biological and geological discoveries culled from the sea’s depths.