Sea cows were totally dependent on kelp for food, and within a decade of the onset of otter hunting, Steller noted that the islands' sea cows appeared malnourished.

海牛完全以海藻为食，在捕猎水獭开始的十年里，斯特勒注意到，岛上的海牛似乎营养不良。

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However, by 1750, hunters had also targeted nearby sea otter populations.

然而，到了1750年，猎人们也开始瞄准附近的海獭种群。

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Back in the 1970s, most experts thought the southern sea otter population would expand at a swift clip of nearly 20% per year like those in Alaska.

早在20世纪70年代，多数专家认为南部海獭数量将阿拉斯加的那样以每年近20%的增长率快速增长。

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