| 1. | Some trilobites even developed shovel-like snouts for ploughing through muddy sea bottoms.
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| 2. | Philippine historian tectonic tilting of the sea bottom in recent geologic times.
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| 3. | The fish uses these pectoral fins to clamber along the sea bottom.
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| 4. | They can be found on the sea bottom near rocks and sand.
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| 5. | Extensive searches of the sea bottom also failed to locate the ship.
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| 6. | They grow in diamond-shaped net pens moored to the sea bottom below.
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| 7. | Those compartments were kept at the same pressure as the sea bottom.
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| 8. | They claim the densely packed pens pollute the sea bottom and are unsightly.
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| 9. | These creatures usually live in hiding places on the sea bottom.
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| 10. | A walk along the dried out sea bottom brings more excitement and danger.
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