海里的鱼正变得越来越小？｜科学60秒
随着全球海洋温度的升高，鲑鱼的迁徙正在提前，浮游生物也在改变自己的生活范围。但同时，更高的水温还意味着鱼类更高的体温，以及不断加速的新陈代谢。
“生活在温度更高的水中，鱼类的代谢速率也更快，这表明它们必须消耗更多的氧气。”英属哥伦比亚大学（University of British Columbia）的渔业科学家丹尼尔·保利（Daniel Pauly）说，“因为基本上整个代谢过程，体内的所有化学反应，都在加速。”
那么，如果它们能长出更大的鳃以吸入更多的氧气呢？保利做了一下生理学计算，得出的结论是：长出更大的鳃也无济于事。
Climate Change Might Shrink Fish
As the world's oceans heat up, salmon are migrating earlier. Plankton are shifting their range. But warmer water temperatures also mean warmer fish—and faster-running metabolisms.
'Fish that are in water of higher temperature have a higher metabolic rate, meaning they have to consume more oxygen.' Daniel Pauly, a fisheries scientist at the University of British Columbia. 'Because essentially the whole metabolism, all the chemical reactions in your body, are accelerated.'
So, how about growing bigger gills to allow for more oxygen intake? Pauly did the physiological math, and concluded that bigger gills won’t do the job. Because he says...[full transcript]