| 21. | A volcanic eruption took place 19 December 2011 from the seabed.
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| 22. | The seabed in general is composed mainly of very soft clays.
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| 23. | It feeds on puerulus larvae, which settle on the seabed.
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| 24. | Environmentalists would ban seabed mining altogether or carefully regulate it.
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| 25. | There are also four seismic stations on the seabed offshore.
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| 26. | Yeltsin also said that the waters above the seabed would remain international.
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| 27. | Instead, massive floating platforms are anchored to the seabed.
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| 28. | Then I heard the submarine was lying on the seabed.
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| 29. | It can happen _ the Himalayas were once ancient seabeds.
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| 30. | Trawlers are commercial fishing boats that drag large nets across the seabed.
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