The biggest can reach 100 pounds and 4 feet long, consuming up to 40 percent of their body weight daily in plankton, the base of the aquatic food chain.

他们的体重最大可以到100磅，4英尺长，每天吃掉的浮游生物重达自身体重的百分之40。浮游生物是水生食物链的基础。

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"It's very disturbing to think about the potential implications of a century-long decline of the base of the food chain," said lead author Daniel Boyce, a Marine ecologist.

“考虑到食物链基础长达一个世纪的减少所带来的潜在影响，这非常令人不安，”研究报告的主要作者，海洋生态学家Daniel博伊斯说。

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"It's very disturbing to think about the potential implications of a century-long decline of the base of the food chain," said lead author Daniel Boyce, a Marine ecologist.

“考虑到食物链基础长达一个世纪的减少所带来的潜在影响，这非常令人不安，”研究报告的主要作者，海洋生态学家Daniel博伊斯说。

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