| 31. | These oysters lived on the sea bed in shallow waters, possibly in large colonies.
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| 32. | The piles are driven deep into the sea bed to reduce the movement on them.
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| 33. | The sea bed consisted primarily of sand.
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| 34. | Sea ploughs are pulled behind cable ships and bury the cable in the sea bed.
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| 35. | Conventional platforms sit atop four permanent legs that rest on pilings driven into the sea bed.
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| 36. | As the sea bed rose a vast coral reef grew on what is now dry land.
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| 37. | The seismic data showed that the explosion occurred at the same depth as the sea bed.
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| 38. | The surrounding sea is shallow, the sea bed gradually sloping, excellent for recreational activities.
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| 39. | She is on the sea bed.
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| 40. | :Regarding question # 4, bridges need not be rigidly anchored to the sea bed.
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