| 21. | Some researchers believe spitting originated with blowing sand away from crustaceans at the sea bottom.
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| 22. | They live on the sea bottom close to the shore, at depths of up to.
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| 23. | However, most areas with significant natural sea bottom disturbance events are in relatively shallow water.
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| 24. | The order to move out goes to the sea bottom tanks in all the bases.
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| 25. | Just as important, certain types of sea bottom serve as nurseries for the next generation.
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| 26. | The platform itself rests on the ocean floor and pumps oil from the sea bottom.
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| 27. | Parts of the sea bottom may become fallout.
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| 28. | Highly organic-rich siliceous shales were deposited during this time in anoxic conditions on the sea bottom.
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| 29. | The sea bottom during deposition of these rocks was foul and frequently the water was turbid.
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| 30. | The field extends into the sea bottom and is distorted slightly if any metal is present.
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