| 41. | Overfishing and marine pollution pose additional problems for the population.
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| 42. | By 1923, the Alaskan salmon population was being depleted from overfishing.
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| 43. | Overfishing depleted shellfish stocks, which have still not recovered.
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| 44. | Due to overfishing, whale oil became rare and expensive.
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| 45. | Toothfish are commercially fished, and illegal overfishing has reduced toothfish populations.
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| 46. | Their assessment can be expensive and there is no evidence of overfishing.
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| 47. | Lamprey distribution may be adversely affected by overfishing and pollution.
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| 48. | There are fears the fishery may collapse due to overfishing.
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| 49. | Alaska officials have steadfastly denied any overfishing of Canada-bound salmon runs.
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| 50. | Specialists generally agree that overfishing is the main cause of the groundfish collapse.
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