Epic Eel Migration Mapped for the First Time

Scientists know that American eels spend most of their adult lives inland or close to the shore, because for thousands of years, that’s where people have caught them. And we know the animals spawn in the open ocean, because that’s where we find their tiny, transparent larvae. But despite decades of searching, no adult American eel (Anguilla rostrata) has ever been spotted migrating across the hundreds of miles of ocean between the animals’ adult haunts and their ancestral spawning areas.

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