| 11. | Tsunamis are the undersea waves triggered by volcanic activity or earthquakes.
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| 12. | Other major Asian undersea cables include C2C and East Asia Crossing.
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| 13. | Navies have grappled with undersea mines for more than a century.
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| 14. | It makes everything from coat hangers to undersea fiber optic cable.
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| 15. | Often, undersea habitats are destroyed, permanently dimming recovery hopes.
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| 16. | Submarines are also used in tourism, and for undersea archaeology.
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| 17. | Undersea earthquakes also expose the Japanese coastline to danger from tsunamis.
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| 18. | Twelve previously unknown volcanoes and numerous undersea hydrothermal vents were discovered.
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| 19. | In a backup series, a new UNDERSEA Agent is introduced.
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| 20. | Fisheries and undersea mines can also be built to produce resources.
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