Freshwater eels, or Anguilla Anguilla, could be found in rivers across Europe, but no one had ever seen them mate.

淡水鳗鱼，又称安圭拉鳗，在欧洲各地河流中都能见到，但没人见过它们交配。

Over the next 300 days, Anguilla Anguilla larvae ride the ocean currents 6,500 km to the coast of Europe — making one of the longest known marine migrations.

在接下来的 300 天里，安圭拉鱼苗顺着洋流漂流 6500 公里到达欧洲海岸 ——这是已知最长的海洋迁徙之一。