| 41. | Traditionally, during the monsoon, the river mouths were closed.
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| 42. | The polar cod is known to frequent river mouths.
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| 43. | We swam in lakes with hippopotamuses and snorkeled in river mouths full of tropical fish.
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| 44. | The Don River mouth is planned to be're-naturalized '.
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| 45. | The river mouth is increasingly being blocked by sediment.
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| 46. | The settlement of Ust-Kara is near the river mouth.
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| 47. | Surf careens in like a phalanx of white horses with spumy manes at River Mouth.
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| 48. | The river mouth is around 2.5 km wide.
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| 49. | Journalists who flew 10 miles up the river mouth saw up to 1, 000 marooned people.
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| 50. | In one river mouth, many boats were damaged.
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