European Eels’ Ocean Mystery
European eels break all the rules of migration. Born in the Sargasso Sea, tiny transparent larvae drift with ocean currents toward Europe. They morph into glass eels upon reaching the coast, then swim up rivers across the continent. For decades, they live in streams from Morocco to Norway. When ready to breed, they change again – eyes grow larger, fins lengthen, and their bodies turn silver. The adult eels stop eating and swim 6,000 kilometers back to their ocean birthplace.