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16 天
智慧大比拼!漫长的迁徙之旅,看聪明的大鳞钩吻鲑宝宝们如何险境 ...
在美国加利福尼亚州的圣华金河,每年春秋季节,成千上万的幼年 大鳞钩吻鲑 (也就是我们常说的Chinook鳟鱼)都会开始一段漫长而艰难的迁徙之旅。想象一下,它们的身体还跟小指差不多长,这些“宝宝们”却要游上 350英里 的距离,穿越急流、躲避捕食者,千辛万苦、最终才能到达广阔的太平洋。
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